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Finding the Third Proportional to 103.13 and 221.95

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Solution

The third proportional to 103.13 and 221.95 is: 477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.13 : 221.95 = 221.95 : x
  2. Step 2: Convert to fraction form
    103.13/221.95 = 221.95/x
  3. Step 3: Cross multiply
    103.13x = 221.95 × 221.95
  4. Step 4: Simplify right side
    103.13x = 49,263.19
  5. Step 5: Solve for x
    x = 49,263.19/103.13
  6. Step 6: Final answer
    x = 477.70

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.