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Finding the Fourth Proportional to 546.38, 820.50 and 542.14

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Solution

The fourth proportional to 546.38, 820.50 and 542.14 is: 814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.38 : 820.50 = 542.14 : x
  2. Step 2: Convert to fraction form
    546.38/820.50 = 542.14/x
  3. Step 3: Cross multiply
    546.38x = 820.50 × 542.14
  4. Step 4: Simplify right side
    546.38x = 444,825.87
  5. Step 5: Solve for x
    x = 444,825.87/546.38
  6. Step 6: Final answer
    x = 814.13

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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.