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Finding the Third Proportional to 451.75 and 874.25

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Solution

The third proportional to 451.75 and 874.25 is: 1,691.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.75 : 874.25 = 874.25 : x
  2. Step 2: Convert to fraction form
    451.75/874.25 = 874.25/x
  3. Step 3: Cross multiply
    451.75x = 874.25 × 874.25
  4. Step 4: Simplify right side
    451.75x = 764,313.06
  5. Step 5: Solve for x
    x = 764,313.06/451.75
  6. Step 6: Final answer
    x = 1,691.89

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Why These Related Problems?

These problems maintain the same ratio (1.94) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.