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Finding the Fourth Proportional to 169.31, 233.39 and 113.92

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Solution

The fourth proportional to 169.31, 233.39 and 113.92 is: 157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.31 : 233.39 = 113.92 : x
  2. Step 2: Convert to fraction form
    169.31/233.39 = 113.92/x
  3. Step 3: Cross multiply
    169.31x = 233.39 × 113.92
  4. Step 4: Simplify right side
    169.31x = 26,587.79
  5. Step 5: Solve for x
    x = 26,587.79/169.31
  6. Step 6: Final answer
    x = 157.04

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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.