Finding the Fourth Proportional to 318.72, 477.99 and 202.99
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Solution
The fourth proportional to 318.72, 477.99 and 202.99 is: 304.43
Step by Step Solution
- Step 1: Write the proportion equation
318.72 : 477.99 = 202.99 : x - Step 2: Convert to fraction form
318.72/477.99 = 202.99/x - Step 3: Cross multiply
318.72x = 477.99 × 202.99 - Step 4: Simplify right side
318.72x = 97,027.19 - Step 5: Solve for x
x = 97,027.19/318.72 - Step 6: Final answer
x = 304.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.