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Finding the Fourth Proportional to 177.38, 243.47 and 169.86

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Solution

The fourth proportional to 177.38, 243.47 and 169.86 is: 233.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.38 : 243.47 = 169.86 : x
  2. Step 2: Convert to fraction form
    177.38/243.47 = 169.86/x
  3. Step 3: Cross multiply
    177.38x = 243.47 × 169.86
  4. Step 4: Simplify right side
    177.38x = 41,355.81
  5. Step 5: Solve for x
    x = 41,355.81/177.38
  6. Step 6: Final answer
    x = 233.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.