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Finding the Fourth Proportional to 161.73, 242.28 and 137.43

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Solution

The fourth proportional to 161.73, 242.28 and 137.43 is: 205.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.73 : 242.28 = 137.43 : x
  2. Step 2: Convert to fraction form
    161.73/242.28 = 137.43/x
  3. Step 3: Cross multiply
    161.73x = 242.28 × 137.43
  4. Step 4: Simplify right side
    161.73x = 33,296.54
  5. Step 5: Solve for x
    x = 33,296.54/161.73
  6. Step 6: Final answer
    x = 205.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.