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Finding the Third Proportional to 222.75 and 445.38

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Solution

The third proportional to 222.75 and 445.38 is: 890.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.75 : 445.38 = 445.38 : x
  2. Step 2: Convert to fraction form
    222.75/445.38 = 445.38/x
  3. Step 3: Cross multiply
    222.75x = 445.38 × 445.38
  4. Step 4: Simplify right side
    222.75x = 198,358.89
  5. Step 5: Solve for x
    x = 198,358.89/222.75
  6. Step 6: Final answer
    x = 890.50

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Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.