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Finding the Third Proportional to 666 and 1,464.19

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Solution

The third proportional to 666 and 1,464.19 is: 3,218.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    666 : 1,464.19 = 1,464.19 : x
  2. Step 2: Convert to fraction form
    666/1,464.19 = 1,464.19/x
  3. Step 3: Cross multiply
    666x = 1,464.19 × 1,464.19
  4. Step 4: Simplify right side
    666x = 2,143,845.04
  5. Step 5: Solve for x
    x = 2,143,845.04/666
  6. Step 6: Final answer
    x = 3,218.99

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.