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Finding the Fourth Proportional to 543.38, 814.73 and 414.22

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Solution

The fourth proportional to 543.38, 814.73 and 414.22 is: 621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.38 : 814.73 = 414.22 : x
  2. Step 2: Convert to fraction form
    543.38/814.73 = 414.22/x
  3. Step 3: Cross multiply
    543.38x = 814.73 × 414.22
  4. Step 4: Simplify right side
    543.38x = 337,471.32
  5. Step 5: Solve for x
    x = 337,471.32/543.38
  6. Step 6: Final answer
    x = 621.06

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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.