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Finding the Third Proportional to 239.50 and 349.25

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Solution

The third proportional to 239.50 and 349.25 is: 509.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.50 : 349.25 = 349.25 : x
  2. Step 2: Convert to fraction form
    239.50/349.25 = 349.25/x
  3. Step 3: Cross multiply
    239.50x = 349.25 × 349.25
  4. Step 4: Simplify right side
    239.50x = 121,975.56
  5. Step 5: Solve for x
    x = 121,975.56/239.50
  6. Step 6: Final answer
    x = 509.29

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.