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Finding the Fourth Proportional to 169.11, 233.17 and 139.73

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Solution

The fourth proportional to 169.11, 233.17 and 139.73 is: 192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.11 : 233.17 = 139.73 : x
  2. Step 2: Convert to fraction form
    169.11/233.17 = 139.73/x
  3. Step 3: Cross multiply
    169.11x = 233.17 × 139.73
  4. Step 4: Simplify right side
    169.11x = 32,579.13
  5. Step 5: Solve for x
    x = 32,579.13/169.11
  6. Step 6: Final answer
    x = 192.65

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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.