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Finding the Third Proportional to 247 and 326.75

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Solution

The third proportional to 247 and 326.75 is: 432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    247 : 326.75 = 326.75 : x
  2. Step 2: Convert to fraction form
    247/326.75 = 326.75/x
  3. Step 3: Cross multiply
    247x = 326.75 × 326.75
  4. Step 4: Simplify right side
    247x = 106,765.56
  5. Step 5: Solve for x
    x = 106,765.56/247
  6. Step 6: Final answer
    x = 432.25

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.