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Finding the Third Proportional to 243.75 and 348.88

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Solution

The third proportional to 243.75 and 348.88 is: 499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.75 : 348.88 = 348.88 : x
  2. Step 2: Convert to fraction form
    243.75/348.88 = 348.88/x
  3. Step 3: Cross multiply
    243.75x = 348.88 × 348.88
  4. Step 4: Simplify right side
    243.75x = 121,713.77
  5. Step 5: Solve for x
    x = 121,713.77/243.75
  6. Step 6: Final answer
    x = 499.34

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.