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Finding the Third Proportional to 658.88 and 1,439.25

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Solution

The third proportional to 658.88 and 1,439.25 is: 3,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.88 : 1,439.25 = 1,439.25 : x
  2. Step 2: Convert to fraction form
    658.88/1,439.25 = 1,439.25/x
  3. Step 3: Cross multiply
    658.88x = 1,439.25 × 1,439.25
  4. Step 4: Simplify right side
    658.88x = 2,071,440.56
  5. Step 5: Solve for x
    x = 2,071,440.56/658.88
  6. Step 6: Final answer
    x = 3,143.91

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.