Finding the Fourth Proportional to 378.87, 568.19 and 122.31
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Solution
The fourth proportional to 378.87, 568.19 and 122.31 is: 183.43
Step by Step Solution
- Step 1: Write the proportion equation
378.87 : 568.19 = 122.31 : x - Step 2: Convert to fraction form
378.87/568.19 = 122.31/x - Step 3: Cross multiply
378.87x = 568.19 × 122.31 - Step 4: Simplify right side
378.87x = 69,496.13 - Step 5: Solve for x
x = 69,496.13/378.87 - Step 6: Final answer
x = 183.43
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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.