Finding the Fourth Proportional to 283.38, 424.97 and 129.18
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Solution
The fourth proportional to 283.38, 424.97 and 129.18 is: 193.72
Step by Step Solution
- Step 1: Write the proportion equation
283.38 : 424.97 = 129.18 : x - Step 2: Convert to fraction form
283.38/424.97 = 129.18/x - Step 3: Cross multiply
283.38x = 424.97 × 129.18 - Step 4: Simplify right side
283.38x = 54,896.98 - Step 5: Solve for x
x = 54,896.98/283.38 - Step 6: Final answer
x = 193.72
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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.