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Finding the Third Proportional to 221.44 and 477.84

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Solution

The third proportional to 221.44 and 477.84 is: 1,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.44 : 477.84 = 477.84 : x
  2. Step 2: Convert to fraction form
    221.44/477.84 = 477.84/x
  3. Step 3: Cross multiply
    221.44x = 477.84 × 477.84
  4. Step 4: Simplify right side
    221.44x = 228,334.65
  5. Step 5: Solve for x
    x = 228,334.65/221.44
  6. Step 6: Final answer
    x = 1,031.15

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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.