Question

The mean proportion between $360a^4$ and $250a^2{b}^2$ is:

• A. $300a^2{b}^2$
• B. $300a{b}^3$
• C. $300a^{3}b$
• D. $300a^3{b}^3$

Answer 1

The correct option is B $300a{b}^3$

$360a^4$, $250a^2{b}^2$

Mean proportion$=(360\times 250a^4{a}^2{b}^2{)}^{\frac{1}{2}}$

$=300a^{3}b$

[A, B two number M.P$=(AB{)}^{\frac{1}{2}}$].