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Finding the Third Proportional to 240.98 and 387.84

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Solution

The third proportional to 240.98 and 387.84 is: 624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.98 : 387.84 = 387.84 : x
  2. Step 2: Convert to fraction form
    240.98/387.84 = 387.84/x
  3. Step 3: Cross multiply
    240.98x = 387.84 × 387.84
  4. Step 4: Simplify right side
    240.98x = 150,422.77
  5. Step 5: Solve for x
    x = 150,422.77/240.98
  6. Step 6: Final answer
    x = 624.20

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.