Question

Fond the third proportion of 1.6 and 0.8

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Solution

Note: 1)The third proportional of two numbers a and b is defined to be that number c such that a : b = b : c. 2) if a:b=c:d then we can write a/b=c/d. Solution: So you want to find a number c such that 1.6 : 0.8 = 0.8 : c ​​​​​​We can write, 1.6/0.8 =0.8/c (See note point one) So, ​solve the equation to get value of c. c=(0.8/1.6)×0.8 =0.4 So third proportion of 1.6 and 0.8 is 0.4

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