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Finding the Third Proportional to 204.38 and 222.75

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Solution

The third proportional to 204.38 and 222.75 is: 242.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.38 : 222.75 = 222.75 : x
  2. Step 2: Convert to fraction form
    204.38/222.75 = 222.75/x
  3. Step 3: Cross multiply
    204.38x = 222.75 × 222.75
  4. Step 4: Simplify right side
    204.38x = 49,617.56
  5. Step 5: Solve for x
    x = 49,617.56/204.38
  6. Step 6: Final answer
    x = 242.78

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.