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Finding the Fourth Proportional to 198.29, 273.56 and 124.65

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Solution

The fourth proportional to 198.29, 273.56 and 124.65 is: 171.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.29 : 273.56 = 124.65 : x
  2. Step 2: Convert to fraction form
    198.29/273.56 = 124.65/x
  3. Step 3: Cross multiply
    198.29x = 273.56 × 124.65
  4. Step 4: Simplify right side
    198.29x = 34,099.25
  5. Step 5: Solve for x
    x = 34,099.25/198.29
  6. Step 6: Final answer
    x = 171.97

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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.