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Finding the Third Proportional to 408.16 and 552.45

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Solution

The third proportional to 408.16 and 552.45 is: 747.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.16 : 552.45 = 552.45 : x
  2. Step 2: Convert to fraction form
    408.16/552.45 = 552.45/x
  3. Step 3: Cross multiply
    408.16x = 552.45 × 552.45
  4. Step 4: Simplify right side
    408.16x = 305,195.82
  5. Step 5: Solve for x
    x = 305,195.82/408.16
  6. Step 6: Final answer
    x = 747.73

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.