Finding the Fourth Proportional to 378.88, 568.30 and 122.36
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Solution
The fourth proportional to 378.88, 568.30 and 122.36 is: 183.53
Step by Step Solution
- Step 1: Write the proportion equation
378.88 : 568.30 = 122.36 : x - Step 2: Convert to fraction form
378.88/568.30 = 122.36/x - Step 3: Cross multiply
378.88x = 568.30 × 122.36 - Step 4: Simplify right side
378.88x = 69,537.19 - Step 5: Solve for x
x = 69,537.19/378.88 - Step 6: Final answer
x = 183.53
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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.