5.048 = 548/1000 = 56/125
548 is an integer. If you divide it by a number which is not a factor of 548 then you will get a fraction.
548/1000 = 137/250
20% of $548 is $109.60
548/100
0.548 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its rational equivalent is 548/1000 which can be simplified to 127/250. But simplification means that you lose information about the precision of the fraction and, in my view, end up with a "simplified" but clumsier fraction..
5.48 = 548/100 = 274/50 = 137/25 = 5 12/25.
If you mean 548/1000 then it is 0.548 as a decimal
The factors of 548 are: 1, 2, 4, 137, 274, 548
548 = DXLVIII
685 - 548 = 137
548