Friday Poser

OK, let's see if this is more difficult:

1, 92, 175, 254, 331,?
 
I think it's 407. The next 3 would then be 482.5, 557.75, and 632.875
 
Last edited:
Close, but no.

I will say this, there are no fractional amounts in the answers.
 
Couldnt edit my prior post I revisited the first method and got this series close to the original thought.

407, 483, 560, 639
 
Has it to do with the number 8, seems that if you disclude the last digit the numbers run in 8's 1, 9, 17, 25, 33. Now just what drives that last digit?
 
The hint so far: there are no fractional amounts in the answers.

Here's another:

The square root of 1 is 1.
 

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