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Finding the Third Proportional to 203.38 and 323.56

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Solution

The third proportional to 203.38 and 323.56 is: 514.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.38 : 323.56 = 323.56 : x
  2. Step 2: Convert to fraction form
    203.38/323.56 = 323.56/x
  3. Step 3: Cross multiply
    203.38x = 323.56 × 323.56
  4. Step 4: Simplify right side
    203.38x = 104,692.69
  5. Step 5: Solve for x
    x = 104,692.69/203.38
  6. Step 6: Final answer
    x = 514.78

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.