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Finding the Third Proportional to 576.38 and 1,243.75

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Solution

The third proportional to 576.38 and 1,243.75 is: 2,683.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.38 : 1,243.75 = 1,243.75 : x
  2. Step 2: Convert to fraction form
    576.38/1,243.75 = 1,243.75/x
  3. Step 3: Cross multiply
    576.38x = 1,243.75 × 1,243.75
  4. Step 4: Simplify right side
    576.38x = 1,546,914.06
  5. Step 5: Solve for x
    x = 1,546,914.06/576.38
  6. Step 6: Final answer
    x = 2,683.87

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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.