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Finding the Third Proportional to 661.92 and 1,454.20

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Solution

The third proportional to 661.92 and 1,454.20 is: 3,194.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.92 : 1,454.20 = 1,454.20 : x
  2. Step 2: Convert to fraction form
    661.92/1,454.20 = 1,454.20/x
  3. Step 3: Cross multiply
    661.92x = 1,454.20 × 1,454.20
  4. Step 4: Simplify right side
    661.92x = 2,114,706.73
  5. Step 5: Solve for x
    x = 2,114,706.73/661.92
  6. Step 6: Final answer
    x = 3,194.80

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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.