Question

please help me to solve this problem​

Answer 1

a/2+4   - heres your answer hope this helps  :)

Answer 2

Answer:

Fourth no. = $\frac{a}{4}$

Step-by-step explanation:

Continued proportion : Three numbers ‘x’, ‘y’ and ‘z’ are said to be continued proportion if x, y and z are in proportion.

Thus, if x, y and z are in continued-proportion, then

x, y, y, z are in proportion, that means

x : y : : y : z

⇒ Product of extremes = Product of means

⇒ x x z = y x y

Given that-

x = a

y = $\frac{a}{2}$

z=?

Applying it, we get-

x x z = y x y

⇒ a x z = $\frac{a}{2}$ x $\frac{a}{2}$

⇒ z = $\frac{\frac{aa}{4} }{a}$

⇒ z = $\frac{a}{4}$

∴ z = $\frac{a}{4}$