MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
The mean proportional between 4 and 9 is :
Topic: Ratio and proportion
Previous-year question practice database
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Answer
Exam answer
(b) Mean proportional x satisfies 4/x=x/9 ⇒ x²=36 ⇒ x=6.
Explanation
The result follows by applying the formula or geometric property stated in the working and substituting the given values.
In words
Mean proportional x satisfies 4/x=x/9 ⇒ x²=36 ⇒ x=6.
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