 | Charles William Hackley - Geometry - 1847 - 248 pages
...unequal, a ratio of Inequality. 76. Proportion is an equality of ratios. Thus, 77. Three quantities are said to be proportional when the ratio of the first to the second is equal to the ratio of the second to the third. As of the three quantities, A = 2, B = 4, C = 8, where... | |
 | Charles Davies - Arithmetic - 1847 - 368 pages
...between four numbers is called proportion ; and generally, Four numbers are said to be in proportion when the ratio of the first to the second is the same as that of the third to the fourth. Hence, 181. How do you determine what part one number is of another?... | |
 | Charles Davies - Arithmetic - 1847 - 368 pages
...between four numbers is called proportion ; and generally, Four numbers are said to be in proportion when the ratio of the first to the second is the same as that of the third to the fourth. Hence, 181. How do you determine what part one number is of another?... | |
 | Elias Loomis - Conic sections - 1849 - 252 pages
...antecedent must be greater than its consequent; if equal, equal; and if less, less. Def. 3. Three quantities are said to be proportional, when the ratio of the first to the second is equal to the ratio of the second to the third; thus, if A, B, and C are in proportion, then A : B :... | |
 | George Roberts Perkins - Arithmetic - 1849 - 346 pages
...between 12 feet and 3 pounds ? Can the ratio be a denominate number 1 How are four quantities related when the ratio of the first to the second is the same as the rntio of tbe third to the fourth .' Which are called extremes ? Which are culled means t To what is... | |
 | George Roberts Perkins - Arithmetic - 1849 - 356 pages
...days, is f . The ratio of 3| hours to 1\ hours, is 3i-^7i=i§. When there are four quantities, of which the ratio of the first to the second is the same as that of the third to the fourth, these four quantities are said to be in proportion. Thus, 4, 6, 8,... | |
 | Benjamin Naylor - 1850 - 334 pages
...65 to 85 it is f |j=i$. Proportion is equality of ratio. Four numbers are said to be proportionals when the ratio of the first to the second is the same as the ratio of the third to the fourth ; hence, 17, 13, 85, 65, are proportionals. The first and fourth are called... | |
 | George Roberts Perkins - Arithmetic - 1850 - 364 pages
...between 12 feet and 3 pounds ? Con the ratio be s denominate number .' How are four quantities related when the ratio of the first to the second is the same as the ratio of the third to the fourth f Which are called estremes ? Which are called means ? To what is the product... | |
 | Charles Davies - Logic - 1850 - 400 pages
...geometrical cnl proper- .„ . i- ir i. • LL uon de«ned, proportion, is applied to tour numbers, in which the ratio of the first to the second is the same as that of the third to the fourth. Thus, Example. 2 : 4 : : 6 : 12, is a geometrical proportion, of which... | |
 | Charles Davies - Arithmetic - 1850 - 148 pages
...compared by their ratio, the term, " A geometrical proportion/' is applied to four numbers, in which the ratio of the first to the second is the same as that of the third to the fourth. Thus, 2 : 4 :: 6 : 12, is a geometrical proportion, of which the ratio... | |
| |
Four quantities are said to be Proportional, when the ratio of the first to the second, is the same as the ratio of the third to the fourth. 
