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Finding the Third Proportional to 1,228.90 and 1,843.49

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Solution

The third proportional to 1,228.90 and 1,843.49 is: 2,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.90 : 1,843.49 = 1,843.49 : x
  2. Step 2: Convert to fraction form
    1,228.90/1,843.49 = 1,843.49/x
  3. Step 3: Cross multiply
    1,228.90x = 1,843.49 × 1,843.49
  4. Step 4: Simplify right side
    1,228.90x = 3,398,449.04
  5. Step 5: Solve for x
    x = 3,398,449.04/1,228.90
  6. Step 6: Final answer
    x = 2,765.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.