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Finding the Fourth Proportional to 542.25, 748.40 and 411.03

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Solution

The fourth proportional to 542.25, 748.40 and 411.03 is: 567.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.25 : 748.40 = 411.03 : x
  2. Step 2: Convert to fraction form
    542.25/748.40 = 411.03/x
  3. Step 3: Cross multiply
    542.25x = 748.40 × 411.03
  4. Step 4: Simplify right side
    542.25x = 307,614.85
  5. Step 5: Solve for x
    x = 307,614.85/542.25
  6. Step 6: Final answer
    x = 567.29

Related Problems

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Double scale
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Similar ratio
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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.