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Finding the Third Proportional to 638.82 and 1,544.06

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Solution

The third proportional to 638.82 and 1,544.06 is: 3,732.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.82 : 1,544.06 = 1,544.06 : x
  2. Step 2: Convert to fraction form
    638.82/1,544.06 = 1,544.06/x
  3. Step 3: Cross multiply
    638.82x = 1,544.06 × 1,544.06
  4. Step 4: Simplify right side
    638.82x = 2,384,129.00
  5. Step 5: Solve for x
    x = 2,384,129.00/638.82
  6. Step 6: Final answer
    x = 3,732.06

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.