The given ratio is:

$\frac{27}{329} = \frac{28}{?}$

To solve for the unknown value (denote it as $x$), we can cross-multiply:

$27 \times x = 28 \times 329$

First, calculate $28 \times 329$:

$28 \times 329 = 9212$

Now, divide both sides by 27:

$x = \frac{9212}{27} \approx 341.19$

So, the value of $x$ is approximately 341.19.

Would you like more details on cross-multiplication, or do you have any other questions?

Here are 5 related questions:

1. What is the concept of proportionality in ratios?
2. How can cross-multiplication be used in other types of problems?
3. What are some applications of ratios in real-life scenarios?
4. How do you simplify a ratio or proportion?
5. What is the difference between a ratio and a fraction?

Tip: Always ensure to simplify ratios when possible to make calculations easier.