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Finding the Third Proportional to 238.69 and 349.69

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Solution

The third proportional to 238.69 and 349.69 is: 512.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.69 : 349.69 = 349.69 : x
  2. Step 2: Convert to fraction form
    238.69/349.69 = 349.69/x
  3. Step 3: Cross multiply
    238.69x = 349.69 × 349.69
  4. Step 4: Simplify right side
    238.69x = 122,281.35
  5. Step 5: Solve for x
    x = 122,281.35/238.69
  6. Step 6: Final answer
    x = 512.31

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.