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Finding the Third Proportional to 247.63 and 348.38

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Solution

The third proportional to 247.63 and 348.38 is: 490.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.63 : 348.38 = 348.38 : x
  2. Step 2: Convert to fraction form
    247.63/348.38 = 348.38/x
  3. Step 3: Cross multiply
    247.63x = 348.38 × 348.38
  4. Step 4: Simplify right side
    247.63x = 121,365.14
  5. Step 5: Solve for x
    x = 121,365.14/247.63
  6. Step 6: Final answer
    x = 490.12

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.