`(DeltaZ)/(Z)=4((DeltaA)/(A))+(1)/(3)((DeltaB)/(B))+(DeltaC)/(C)+(3)/(2)((DeltaD)/(D))`

Given that, `(DeltaA)/(A)xx100=4,`

`(DeltaB)/(B)xx100=2,`

`(DeltaC)/(C)xx100=3,`

and `(DeltaD)/(D)xx100=1,`

`(DeltaZ)/(Z)xx100=(4xx4)+((1)/(3)xx2)+3+((3)/(2)xx1)`

`=16+(2)/(3)+3+(3)/(2)`

21.16%

The percentage error in the measurement of Z is 21.16% Therefore, the relative error in Z is 0.2116.