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Finding the Third Proportional to 202.78 and 232.88

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Solution

The third proportional to 202.78 and 232.88 is: 267.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.78 : 232.88 = 232.88 : x
  2. Step 2: Convert to fraction form
    202.78/232.88 = 232.88/x
  3. Step 3: Cross multiply
    202.78x = 232.88 × 232.88
  4. Step 4: Simplify right side
    202.78x = 54,230.77
  5. Step 5: Solve for x
    x = 54,230.77/202.78
  6. Step 6: Final answer
    x = 267.43

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.