Finding the Fourth Proportional to 318.10, 477.08 and 135.66
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Solution
The fourth proportional to 318.10, 477.08 and 135.66 is: 203.46
Step by Step Solution
- Step 1: Write the proportion equation
318.10 : 477.08 = 135.66 : x - Step 2: Convert to fraction form
318.10/477.08 = 135.66/x - Step 3: Cross multiply
318.10x = 477.08 × 135.66 - Step 4: Simplify right side
318.10x = 64,720.67 - Step 5: Solve for x
x = 64,720.67/318.10 - Step 6: Final answer
x = 203.46
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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.