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Finding the Fourth Proportional to 140.74, 210.55 and 132.23

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Solution

The fourth proportional to 140.74, 210.55 and 132.23 is: 197.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.74 : 210.55 = 132.23 : x
  2. Step 2: Convert to fraction form
    140.74/210.55 = 132.23/x
  3. Step 3: Cross multiply
    140.74x = 210.55 × 132.23
  4. Step 4: Simplify right side
    140.74x = 27,841.47
  5. Step 5: Solve for x
    x = 27,841.47/140.74
  6. Step 6: Final answer
    x = 197.83

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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.