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Finding the Third Proportional to 456.25 and 901.25

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Solution

The third proportional to 456.25 and 901.25 is: 1,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.25 : 901.25 = 901.25 : x
  2. Step 2: Convert to fraction form
    456.25/901.25 = 901.25/x
  3. Step 3: Cross multiply
    456.25x = 901.25 × 901.25
  4. Step 4: Simplify right side
    456.25x = 812,251.56
  5. Step 5: Solve for x
    x = 812,251.56/456.25
  6. Step 6: Final answer
    x = 1,780.28

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.