Finding the Fourth Proportional to 378.94, 568.49 and 122.62
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Solution
The fourth proportional to 378.94, 568.49 and 122.62 is: 183.96
Step by Step Solution
- Step 1: Write the proportion equation
378.94 : 568.49 = 122.62 : x - Step 2: Convert to fraction form
378.94/568.49 = 122.62/x - Step 3: Cross multiply
378.94x = 568.49 × 122.62 - Step 4: Simplify right side
378.94x = 69,708.24 - Step 5: Solve for x
x = 69,708.24/378.94 - Step 6: Final answer
x = 183.96
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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.