Getting average down to 5

Hey, Having a bit of a problem working out the logic to this one (its 5am now...), basically people vote on pics like hotornot.com, but here they vote on a scale of 1-5 (one being something like what was hit by a bus at birth and five being the person you will never have a chance to have children with) :-D Anyway.....how do i get the averages down to a max of 5pts? eg: 1.2 is ok 4.5 is ok 5.0 is ok 3.1 is ok 1.1 is ok 2.2 is ok etc 97.3 is not ok 5.3 is not ok etc Thanks, Ryan