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Finding the Third Proportional to 203.77 and 447.40

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Solution

The third proportional to 203.77 and 447.40 is: 982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.77 : 447.40 = 447.40 : x
  2. Step 2: Convert to fraction form
    203.77/447.40 = 447.40/x
  3. Step 3: Cross multiply
    203.77x = 447.40 × 447.40
  4. Step 4: Simplify right side
    203.77x = 200,165.36
  5. Step 5: Solve for x
    x = 200,165.36/203.77
  6. Step 6: Final answer
    x = 982.33

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.