| Charles Smith - Arithmetic - 1895 - 412 pages
...cd. 24 cu. ft., and the ratio being £, or 8 : 9. PROPORTION. 203. When four quantities are such that **the ratio of the first to the second is equal to the ratio of the** third to the fourth, the four quantities are said to be Proportionals. For example, the ratio $5 :... | |
| George D. Pettee - Geometry, Plane - 1896 - 272 pages
...DEFINITIONS 183. A Proportion is an equality of ratios. Four quantities are said to be in proportion **when the ratio of the first to the second is equal to the ratio of the** third to the fourth. A proportion may be written in either of the following forms: a: b = c : d, or... | |
| Henry Sinclair Hall, Samuel Ratcliffe Knight - Algebra - 1897 - 548 pages
...either x — y, or г = x + y. PROPORTION. 348. DEFINITION. Four quantities are said to be in proportion **when the ratio of the first to the second is equal to the ratio of the** third to the fourth. The four quantities are called proportionals, or the terms of the proportion.... | |
| George Chrystal - Algebra - 1898 - 474 pages
...— • Four algebraic quantities a, b, c, d are said to be in proportion wlwn a/b = c/d, that is, **when the ratio of the first to the second is equal to the ratio of the** third to tlie fourth. We may write this relation with the special notation a : b = c : d whenever it... | |
| George Chrystal - Algebra - 1898 - 412 pages
...follows : — F<mr algebraic quantities a, b, c, d are said to be in proportion wlien a/b = c/d, that is, **when the ratio of the first to the second is equal to the ratio of the** third to tlie fourth. We may write this relation with the special notation a : b = с : d whenever... | |
| Frank Castle - Mathematics - 1899 - 404 pages
...given example, the two ratios are equal, the four terms are said to be in proportion, hence : Four **quantities are said to be proportional, when the ratio...the first to the second is equal to the ratio of the** third to the fourth. That is, when the first is the same multiple or sub-multiple of the second, which... | |
| Charles Austin Hobbs - Geometry, Plane - 1899 - 240 pages
...its simplest form, the proportion may be written a:b::d:c. Hence, four quantities are reciprocally **proportional when the ratio of the first to the second is equal to the ratio of the** fourth to the third. When the terms of each ratio of a proportion are interchanged, the four quantities... | |
| Frank Castle - Mathematics - 1900
...given example, the two ratios are equal, the four terms are said to be in proportion, hence : Four **quantities are said to be proportional, when the ratio...the first to the second is equal to the ratio of the** third to the fourth. That is, when the first is the same multiple or sub-multiple of the second, which... | |
| George Edward Atwood - 1900 - 264 pages
...double colon, as follows : a:b=c:d ?=£ a:b::c:d bd 416. Four numbers are said to be in proportion **when the ratio of the first to the second is equal to the ratio of the** third to the fourth. The four numbers are called proportionals, and the fourth number is called a,... | |
| James Morford Taylor - Algebra - 1900 - 508 pages
...the greater ratio, 7:5 or 7 + 2:5 + 2? PROPORTION. 324. Four quantities are said to be in proportion **when the ratio of the first to the second is equal to the ratio of the** third to the fourth. An equality whose members are two equal ratios is called a proportion. Thus, if... | |
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