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Finding the Third Proportional to 240.94 and 315.47

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Solution

The third proportional to 240.94 and 315.47 is: 413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.94 : 315.47 = 315.47 : x
  2. Step 2: Convert to fraction form
    240.94/315.47 = 315.47/x
  3. Step 3: Cross multiply
    240.94x = 315.47 × 315.47
  4. Step 4: Simplify right side
    240.94x = 99,520.53
  5. Step 5: Solve for x
    x = 99,520.53/240.94
  6. Step 6: Final answer
    x = 413.06

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.