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Finding the Third Proportional to 664 and 1,703

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Solution

The third proportional to 664 and 1,703 is: 4,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664 : 1,703 = 1,703 : x
  2. Step 2: Convert to fraction form
    664/1,703 = 1,703/x
  3. Step 3: Cross multiply
    664x = 1,703 × 1,703
  4. Step 4: Simplify right side
    664x = 2,900,209
  5. Step 5: Solve for x
    x = 2,900,209/664
  6. Step 6: Final answer
    x = 4,367.78

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.