Question

Answer these 5 questions with steps and get the brainliest from me
(I) find the mean proportional of 9 and 25.
(ii) Find the third proportional of 36 and 12
(iii) Find the third proportional to 2.5 g and 3.5 g
(iv) In an exam, I scored 332 marks. If I got 83%, then what are the total marks?
(v) Increase 15% in 38 kgs. Find the increased quantity

Please answer ASAP

Answer 1

Answer:

third proportional to 2.5 g and 3.5 g

(iv) In an exam, I scored 332

Answer 2

Answer:

We will learn how to find the mean and third proportional of the set of three numbers.

If x, y and z are in continued proportion then y is called the mean proportional (or geometric mean) of x and z.

If y is the mean proportional of x and z, y^2 = xz, i.e., y = +xz−−√.

For example, the mean proportion of 4 and 16 = +4×16−−−−−√ = +64−−√ = 8

If x, y and z are in continued proportion then z is called the third proportional.

For example, the third proportional of 4, 8 is 16