By idea gas equation we can say
[tex]PV = nRT[/tex]
here P = pressure
V = volume
n = number of moles
R = Avagadro gas constant
T = temperature
So from above expression we can see that for constant number of moles we can say
[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]
[tex]\frac{475*4}{290} = \frac{P_2*6.5}{277}[/tex]
[tex]6.55 = 0.023*P_2[/tex]
[tex] P_2 = 279.1 kPa[/tex]
So finally the pressure will be 279.1 kPa