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Finding the Third Proportional to 110.50 and 206.38

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Solution

The third proportional to 110.50 and 206.38 is: 385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.50 : 206.38 = 206.38 : x
  2. Step 2: Convert to fraction form
    110.50/206.38 = 206.38/x
  3. Step 3: Cross multiply
    110.50x = 206.38 × 206.38
  4. Step 4: Simplify right side
    110.50x = 42,590.64
  5. Step 5: Solve for x
    x = 42,590.64/110.50
  6. Step 6: Final answer
    x = 385.44

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.