Finding the Fourth Proportional to 354.17, 531.09 and 122.99
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Solution
The fourth proportional to 354.17, 531.09 and 122.99 is: 184.42
Step by Step Solution
- Step 1: Write the proportion equation
354.17 : 531.09 = 122.99 : x - Step 2: Convert to fraction form
354.17/531.09 = 122.99/x - Step 3: Cross multiply
354.17x = 531.09 × 122.99 - Step 4: Simplify right side
354.17x = 65,316.10 - Step 5: Solve for x
x = 65,316.10/354.17 - Step 6: Final answer
x = 184.42
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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.