If x is the mean proportional between 12

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

If x is the mean proportional between 12.8 and 64.8, then the value of x is:

Options:

28.8

26.4

Correct Answer:

28.8

Explanation:

Using the direct formula,

Mean Proportion (x) = $\sqrt {a\; \times\; b}$

= $\sqrt {12.8\; \times\; 64.8 }$

x = 28.8