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Finding the Fourth Proportional to 252.31, 348.17 and 169.40

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Solution

The fourth proportional to 252.31, 348.17 and 169.40 is: 233.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.31 : 348.17 = 169.40 : x
  2. Step 2: Convert to fraction form
    252.31/348.17 = 169.40/x
  3. Step 3: Cross multiply
    252.31x = 348.17 × 169.40
  4. Step 4: Simplify right side
    252.31x = 58,980.01
  5. Step 5: Solve for x
    x = 58,980.01/252.31
  6. Step 6: Final answer
    x = 233.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.