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Finding the Third Proportional to 666 and 1,799

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Solution

The third proportional to 666 and 1,799 is: 4,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    666 : 1,799 = 1,799 : x
  2. Step 2: Convert to fraction form
    666/1,799 = 1,799/x
  3. Step 3: Cross multiply
    666x = 1,799 × 1,799
  4. Step 4: Simplify right side
    666x = 3,236,401
  5. Step 5: Solve for x
    x = 3,236,401/666
  6. Step 6: Final answer
    x = 4,859.46

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.