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Finding the Third Proportional to 239.75 and 346.75

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Solution

The third proportional to 239.75 and 346.75 is: 501.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.75 : 346.75 = 346.75 : x
  2. Step 2: Convert to fraction form
    239.75/346.75 = 346.75/x
  3. Step 3: Cross multiply
    239.75x = 346.75 × 346.75
  4. Step 4: Simplify right side
    239.75x = 120,235.56
  5. Step 5: Solve for x
    x = 120,235.56/239.75
  6. Step 6: Final answer
    x = 501.50

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.