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Finding the Fourth Proportional to 534.97, 802.39 and 169.78

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Solution

The fourth proportional to 534.97, 802.39 and 169.78 is: 254.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.97 : 802.39 = 169.78 : x
  2. Step 2: Convert to fraction form
    534.97/802.39 = 169.78/x
  3. Step 3: Cross multiply
    534.97x = 802.39 × 169.78
  4. Step 4: Simplify right side
    534.97x = 136,229.77
  5. Step 5: Solve for x
    x = 136,229.77/534.97
  6. Step 6: Final answer
    x = 254.65

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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.