What voltage can be expected at the transformer secondary

380v source, 600 at winding, 480 at secondary winding.
All information given. Please help by giving example, formula and answer. Thank you sooooooooooooo much.

Secondary Voltage/Primary Voltage = Secondary winding number/Primary winding number
Secondary Voltage/380 = 480/600
Secondary Voltage = (480*380)/600
=304 Volts

380 : x = 600 : 480
x = 304V