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Finding the Fourth Proportional to 534.38, 801.65 and 169.20

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Solution

The fourth proportional to 534.38, 801.65 and 169.20 is: 253.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.38 : 801.65 = 169.20 : x
  2. Step 2: Convert to fraction form
    534.38/801.65 = 169.20/x
  3. Step 3: Cross multiply
    534.38x = 801.65 × 169.20
  4. Step 4: Simplify right side
    534.38x = 135,638.33
  5. Step 5: Solve for x
    x = 135,638.33/534.38
  6. Step 6: Final answer
    x = 253.83

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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.