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Finding the Third Proportional to 274.13 and 413.81

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Solution

The third proportional to 274.13 and 413.81 is: 624.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.13 : 413.81 = 413.81 : x
  2. Step 2: Convert to fraction form
    274.13/413.81 = 413.81/x
  3. Step 3: Cross multiply
    274.13x = 413.81 × 413.81
  4. Step 4: Simplify right side
    274.13x = 171,240.79
  5. Step 5: Solve for x
    x = 171,240.79/274.13
  6. Step 6: Final answer
    x = 624.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.