SOLUTION: The thighbone or femur is the largest bone in the body. About 1/4 of a person`s height is the length of a femur. If a person`s femur measures 19.75 inches, about how many feet tall

Algebra ->  Test -> SOLUTION: The thighbone or femur is the largest bone in the body. About 1/4 of a person`s height is the length of a femur. If a person`s femur measures 19.75 inches, about how many feet tall      Log On


   

Question 790734: The thighbone or femur is the largest bone in the body. About 1/4 of a person`s height is the length of a femur. If a person`s femur measures 19.75 inches, about how many feet tall is the person?
Answer by shosta(4) About Me  (Show Source):
You can put this solution on YOUR website!
you can set this up as a ratio

1%2F+4+=+bone+length%2Ftotal+height+
since the bone length is given we then have
1%2F4+=+19.75in%2Ftotal+height
we can then cross multiply and you get +4+X+19.75+=+1+x+total+height
so 79 in = total height
but the question asks for feet
and there are 12 in in every foot

so we use 79in+X+1ft%2F12in+=+6.58+feet notice here that the inches units cancel out and we are left with feet