We are given that 0.5% of \( x \) is 45, which can be written as the equation:

\[
0.5\% \times x = 45
\]

To remove the percentage, convert 0.5% to its decimal form:

\[
0.5\% = \frac{0.5}{100} = 0.005
\]

Now substitute this into the equation:

\[
0.005 \times x = 45
\]

To find \( x \), divide both sides of the equation by 0.005:

\[
x = \frac{45}{0.005}
\]

Now, perform the division:

\[
x = 9000
\]

Thus, \( x = 9000 \).

Would you like more details or have any questions?

Here are 5 related questions:
1. What is the formula for converting a percentage to a decimal?
2. How would you solve for \( x \) if 0.5% of \( x \) were a different value?
3. How do you handle percentages greater than 100%?
4. What is the difference between percentage and percentage points?
5. Can you express other parts of \( x \) using percentages?

**Tip:** Always convert percentages to decimals before solving equations involving percentages.

Learn how to solve the problem: 'Find x if 0.5% of x is 45'. This step-by-step solution covers key algebraic concepts such as converting percentages to decimals and solving linear equations. Ideal for students in Grades 6-8.

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