Question

find the third proportional to 3.2 0.8

Answer 1

3.2:0.8::0.8:x
3.2*x = 0.8*0.8
3.2x = 0.64
X = 0.64÷3.2
X = 0.2

Ans. -- 0.2

Answer 2

The third proportion to 3.2 and 0.8 is 0.2

Solution:

Given that,

We have to find the third proportion to 3.2 and 0.8

Let "x" be the third proportion

Then,

3.2 : 0.8 : : 0.8 : x

By proportions,

$\frac{3.2}{0.8} = \frac{0.8}{x}\\\\Simplify\\\\4x = 0.8\\\\x = 0.2$

Thus the third proportion to 3.2 and 0.8 is 0.2

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