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Finding the Third Proportional to 103 and 222.31

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Solution

The third proportional to 103 and 222.31 is: 479.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103 : 222.31 = 222.31 : x
  2. Step 2: Convert to fraction form
    103/222.31 = 222.31/x
  3. Step 3: Cross multiply
    103x = 222.31 × 222.31
  4. Step 4: Simplify right side
    103x = 49,422.85
  5. Step 5: Solve for x
    x = 49,422.85/103
  6. Step 6: Final answer
    x = 479.83

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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.