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Finding the Third Proportional to 234.75 and 385.88

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Solution

The third proportional to 234.75 and 385.88 is: 634.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.75 : 385.88 = 385.88 : x
  2. Step 2: Convert to fraction form
    234.75/385.88 = 385.88/x
  3. Step 3: Cross multiply
    234.75x = 385.88 × 385.88
  4. Step 4: Simplify right side
    234.75x = 148,899.52
  5. Step 5: Solve for x
    x = 148,899.52/234.75
  6. Step 6: Final answer
    x = 634.29

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.