We simply divide

22/100
27/200
42/500
67/1000

If there is no single value for the above (obviously all four values are different), then yes, T is NOT directly proportional to x.

Because if y is directly proportional to x, then y = kx for a proportionality constant k, or in other words,

y/x = k

This k has to be a fixed value for y to be directly proportional to x.

Here, the k obtained is different in each case.

0.22
0.135
0.084
0.067

Thank you sir