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Finding the Third Proportional to 680 and 1,463

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Solution

The third proportional to 680 and 1,463 is: 3,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680 : 1,463 = 1,463 : x
  2. Step 2: Convert to fraction form
    680/1,463 = 1,463/x
  3. Step 3: Cross multiply
    680x = 1,463 × 1,463
  4. Step 4: Simplify right side
    680x = 2,140,369
  5. Step 5: Solve for x
    x = 2,140,369/680
  6. Step 6: Final answer
    x = 3,147.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.