Finding the Fourth Proportional to 396.44, 546.97 and 239.05
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Solution
The fourth proportional to 396.44, 546.97 and 239.05 is: 329.82
Step by Step Solution
- Step 1: Write the proportion equation
396.44 : 546.97 = 239.05 : x - Step 2: Convert to fraction form
396.44/546.97 = 239.05/x - Step 3: Cross multiply
396.44x = 546.97 × 239.05 - Step 4: Simplify right side
396.44x = 130,753.18 - Step 5: Solve for x
x = 130,753.18/396.44 - Step 6: Final answer
x = 329.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.