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Finding the Fourth Proportional to 542.87, 814.28 and 177.62

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Solution

The fourth proportional to 542.87, 814.28 and 177.62 is: 266.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.87 : 814.28 = 177.62 : x
  2. Step 2: Convert to fraction form
    542.87/814.28 = 177.62/x
  3. Step 3: Cross multiply
    542.87x = 814.28 × 177.62
  4. Step 4: Simplify right side
    542.87x = 144,628.34
  5. Step 5: Solve for x
    x = 144,628.34/542.87
  6. Step 6: Final answer
    x = 266.41

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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.