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Finding the Third Proportional to 1,149.28 and 2,480.86

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Solution

The third proportional to 1,149.28 and 2,480.86 is: 5,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.28 : 2,480.86 = 2,480.86 : x
  2. Step 2: Convert to fraction form
    1,149.28/2,480.86 = 2,480.86/x
  3. Step 3: Cross multiply
    1,149.28x = 2,480.86 × 2,480.86
  4. Step 4: Simplify right side
    1,149.28x = 6,154,663.24
  5. Step 5: Solve for x
    x = 6,154,663.24/1,149.28
  6. Step 6: Final answer
    x = 5,355.23

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.