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Finding the Third Proportional to 454.75 and 711.38

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Solution

The third proportional to 454.75 and 711.38 is: 1,112.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.75 : 711.38 = 711.38 : x
  2. Step 2: Convert to fraction form
    454.75/711.38 = 711.38/x
  3. Step 3: Cross multiply
    454.75x = 711.38 × 711.38
  4. Step 4: Simplify right side
    454.75x = 506,054.39
  5. Step 5: Solve for x
    x = 506,054.39/454.75
  6. Step 6: Final answer
    x = 1,112.82

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.