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Finding the Third Proportional to 220.22 and 313.24

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Solution

The third proportional to 220.22 and 313.24 is: 445.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.22 : 313.24 = 313.24 : x
  2. Step 2: Convert to fraction form
    220.22/313.24 = 313.24/x
  3. Step 3: Cross multiply
    220.22x = 313.24 × 313.24
  4. Step 4: Simplify right side
    220.22x = 98,120.67
  5. Step 5: Solve for x
    x = 98,120.67/220.22
  6. Step 6: Final answer
    x = 445.56

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.