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Finding the Third Proportional to 251.75 and 327.88

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Solution

The third proportional to 251.75 and 327.88 is: 427.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.75 : 327.88 = 327.88 : x
  2. Step 2: Convert to fraction form
    251.75/327.88 = 327.88/x
  3. Step 3: Cross multiply
    251.75x = 327.88 × 327.88
  4. Step 4: Simplify right side
    251.75x = 107,502.02
  5. Step 5: Solve for x
    x = 107,502.02/251.75
  6. Step 6: Final answer
    x = 427.02

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.