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Finding the Third Proportional to 397.13 and 1,077.19

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Solution

The third proportional to 397.13 and 1,077.19 is: 2,921.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.13 : 1,077.19 = 1,077.19 : x
  2. Step 2: Convert to fraction form
    397.13/1,077.19 = 1,077.19/x
  3. Step 3: Cross multiply
    397.13x = 1,077.19 × 1,077.19
  4. Step 4: Simplify right side
    397.13x = 1,160,332.91
  5. Step 5: Solve for x
    x = 1,160,332.91/397.13
  6. Step 6: Final answer
    x = 2,921.83

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.