The 3rd term in a geometric sequence is 40. the 5th term is 10. what are the possible values of the 4th term?

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.

The volume is 56.8 triangular the