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Finding the Third Proportional to 220.75 and 477.88

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Solution

The third proportional to 220.75 and 477.88 is: 1,034.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.75 : 477.88 = 477.88 : x
  2. Step 2: Convert to fraction form
    220.75/477.88 = 477.88/x
  3. Step 3: Cross multiply
    220.75x = 477.88 × 477.88
  4. Step 4: Simplify right side
    220.75x = 228,364.52
  5. Step 5: Solve for x
    x = 228,364.52/220.75
  6. Step 6: Final answer
    x = 1,034.49

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.