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Finding the Third Proportional to 747.38 and 1,555.69

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Solution

The third proportional to 747.38 and 1,555.69 is: 3,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.38 : 1,555.69 = 1,555.69 : x
  2. Step 2: Convert to fraction form
    747.38/1,555.69 = 1,555.69/x
  3. Step 3: Cross multiply
    747.38x = 1,555.69 × 1,555.69
  4. Step 4: Simplify right side
    747.38x = 2,420,163.60
  5. Step 5: Solve for x
    x = 2,420,163.60/747.38
  6. Step 6: Final answer
    x = 3,238.22

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.