Question

4.5,4,6,13.5, ? ,217.5 what is that number​

Answer 1

Step-by-step explanation:

The pattern is the number + 1/2 the number = the next number.

So:

4+2=6

6+3=9

9+4.5=13.5

This could also be written as: x+.5*x=Next number

So, the next two numbers are:

13.5+6.75=20.25

20.25+10.125=30.375

Answer 2

Answer:

Step-by-step explanation:

4+2=6

6+3=9

9+4.5=13.5

Let it be

x+.5*x=Next number

the next two numbers are:

13.5+6.75=20.25

20.25+10.125=30.375