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Finding the Third Proportional to 220.25 and 464.50

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Solution

The third proportional to 220.25 and 464.50 is: 979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.25 : 464.50 = 464.50 : x
  2. Step 2: Convert to fraction form
    220.25/464.50 = 464.50/x
  3. Step 3: Cross multiply
    220.25x = 464.50 × 464.50
  4. Step 4: Simplify right side
    220.25x = 215,760.25
  5. Step 5: Solve for x
    x = 215,760.25/220.25
  6. Step 6: Final answer
    x = 979.62

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.