 | Edwin Crawford Hewett - 1897 - 370 σελίδες
...and the other pair the mean terms, of that proportion. Hence, we see the grand principle that: In any proportion the product of the means equals the product of the extremes. On this principle we can always find any term of a proportion when the other three terms are given.... | |
 | George Albert Wentworth - 1898 - 424 σελίδες
...men ~, / men ^ <- r 5 dy. I : ? dy. I : : \ 15 A. : \ 19.5 A. 14 hr. J 13 hr. J ' \ 14 hr. J 13 hr. J Since the product of the means equals the product of the extremes, the number of days required equals the product of the extremes divided by the product of the remaining... | |
 | Frank H. Hall - 1898 - 296 σελίδες
...a mean proportional of 3 and 12. EXAMPLE. In the proportion 12 : x : : x : 75, find the value of x. Since the product of the means equals the product of the extremes, x times x equals 12 times 75, or, x* = 900. x = 30. Find the value of x in each of the following proportions... | |
 | George Albert Wentworth - 1898 - 424 σελίδες
...effect. 2d effect. 4 men -. 7 men ^ r / 5 dy. I : ? dy. L :: J 15 A. : j 19.5 A. 14 hr. J 13 hr. JII Since the product of the means equals the product of the extremes, the number of days required equals the product of the extremes divided by the product of the remaining... | |
 | Frank H. Hall - 1898 - 332 σελίδες
...a mean proportional of 3 and 12. EXAMPLE. In the proportion 12 : x : : x : 75, find the value of x. Since the product of the means equals the product of the extremes, x times x equals 12 times 75, or, .r2 = 900. x = 30. Find the value of x in each of the following proportions... | |
 | Frank H. Hall - 1898 - 298 σελίδες
...a mean proportional of 3 and 12. EXAMPLE. In the proportion 12 : x : : x : 75, find the value of x. Since the product of the means equals the product of the extremes, x times x equals 12 times 75, or, x2 = 900. x = 30. Find the value of x in each of the following proportions... | |
 | Frank H. Hall - 1898 - 326 σελίδες
...a mean proportional of 3 and 12. EXAMPLE. In the proportion 12 : x : : x : 75, find the value of x. Since the product of the means equals the product of the extremes, x times x equals 12 times 75, or, x* = 900. x = 30. Find the value of x in each of the following proportions:... | |
 | George Albert Wentworth - 1898 - 424 σελίδες
...effect. 2d effect. 4 men -, 7 men -* rr 5 dy. I : ? dy. I : : i 15 A. : I 19.5 A. 14 hr. J 13 hr. JII Since the product of the means equals the product of the extremes, the number of days required equals the product of the extremes divided by the product of the remaining... | |
 | James Morgan Rawlins - 1899 - 458 σελίδες
...interest, at 5%, of from Sept. 1, 1894, to the present time. 61. Show that if four quantities are in proportion the product of the means equals the product of the extremes. 62. How much is due Aug. 15, 1893, 011 an interest-bearing promissory note for $250, dated Buffalo,... | |
 | Frank H. Hall - 1899 - 456 σελίδες
...is a mean proportional of 3 and 12. EXAMPLE. In the proportion 12 : x:: x: 75, find the value of x. Since the product of the means equals the product of the extremes, x times x equals 12 times 75, or, a? = 900. x = 30. Find the value of a ; in each of the following... | |
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In any proportion, the product of the means equals the product of the extremes. 
