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Finding the Fourth Proportional to 542.69, 814.05 and 177.52

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Solution

The fourth proportional to 542.69, 814.05 and 177.52 is: 266.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.69 : 814.05 = 177.52 : x
  2. Step 2: Convert to fraction form
    542.69/814.05 = 177.52/x
  3. Step 3: Cross multiply
    542.69x = 814.05 × 177.52
  4. Step 4: Simplify right side
    542.69x = 144,505.20
  5. Step 5: Solve for x
    x = 144,505.20/542.69
  6. Step 6: Final answer
    x = 266.28

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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.