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Finding the Third Proportional to 223.31 and 330.75

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Solution

The third proportional to 223.31 and 330.75 is: 489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.31 : 330.75 = 330.75 : x
  2. Step 2: Convert to fraction form
    223.31/330.75 = 330.75/x
  3. Step 3: Cross multiply
    223.31x = 330.75 × 330.75
  4. Step 4: Simplify right side
    223.31x = 109,395.56
  5. Step 5: Solve for x
    x = 109,395.56/223.31
  6. Step 6: Final answer
    x = 489.88

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.