Question

If 2x, 9 and 18 are in continued proportion, the value of x is ______.

Options

• `2 1/4`

• `4/9`

• 1

• 9

Answer 1

If 2x, 9 and 18 are in continued proportion, the value of x is `underlinebb(2 1/4)`.

Explanation:

Since 2x, 9 and 18 are in continued proportion

∴ `(2x)/9 = 9/18 = 1/2`

`\implies x = 1/2 xx 9/2`

= `9/4`

= `2 1/4`