Assume $y$ Is Directly Proportional To $x$ And $y$ Is 3311 When $x$ Is 1505
(A) Find the Constant of Proportionality

Assume $y$ is directly proportional to $x$ and $y$ is 33.11 when $x$ is 15.05 .
(a) Find the constant of proportionality.
(b) Write the equation $y=\mathrm{f}(x)$ .
(c) Find $y$ when $x=562.5$ .
(d) Find $x$ when $y=152.46$ .