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Finding the Third Proportional to 413.75 and 662.38

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Solution

The third proportional to 413.75 and 662.38 is: 1,060.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.75 : 662.38 = 662.38 : x
  2. Step 2: Convert to fraction form
    413.75/662.38 = 662.38/x
  3. Step 3: Cross multiply
    413.75x = 662.38 × 662.38
  4. Step 4: Simplify right side
    413.75x = 438,740.64
  5. Step 5: Solve for x
    x = 438,740.64/413.75
  6. Step 6: Final answer
    x = 1,060.40

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.