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Finding the Fourth Proportional to 177.38, 243.42 and 160.96

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Solution

The fourth proportional to 177.38, 243.42 and 160.96 is: 220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.38 : 243.42 = 160.96 : x
  2. Step 2: Convert to fraction form
    177.38/243.42 = 160.96/x
  3. Step 3: Cross multiply
    177.38x = 243.42 × 160.96
  4. Step 4: Simplify right side
    177.38x = 39,180.88
  5. Step 5: Solve for x
    x = 39,180.88/177.38
  6. Step 6: Final answer
    x = 220.89

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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.