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Finding the Third Proportional to 403.13 and 552.56

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Solution

The third proportional to 403.13 and 552.56 is: 757.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.13 : 552.56 = 552.56 : x
  2. Step 2: Convert to fraction form
    403.13/552.56 = 552.56/x
  3. Step 3: Cross multiply
    403.13x = 552.56 × 552.56
  4. Step 4: Simplify right side
    403.13x = 305,325.32
  5. Step 5: Solve for x
    x = 305,325.32/403.13
  6. Step 6: Final answer
    x = 757.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.