Question

If a,b,c are in proportion find a if b = 15 and c = 40.
Step by step
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Answer 1

$\textbf{Heya}$

If a, b and c are in proportion, then
a,b,b,c are in proportion.

This means that a:b = b:c

b = 15 and c = 40 , a = ?

Now,

Product of the extremes = Product of the means

So,
a × c = b × b
a × 40 = 15 × 15
a × 40 = 225
a = 225/40

$\textbf{a = 5.625}$

Answer 2

Answer:

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