Question

Find the value of x, if the following is in continued proportion: $15,30andx$.

Answer 1

Find the value of $x$

Given that, $15,30andx$ are in continued proportion.

So, $15:30::30:x$

$\Rightarrow \frac{15}{30}=\frac{30}{x}$

$\Rightarrow 15\times x=30\times 30$

$\Rightarrow x=\frac{30\times 30}{15}$

$\Rightarrow x=60$

So, $x=60$

Hence, the value of $x=60$.