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Finding the Fourth Proportional to 479.75, 662.54 and 413.22

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Solution

The fourth proportional to 479.75, 662.54 and 413.22 is: 570.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.75 : 662.54 = 413.22 : x
  2. Step 2: Convert to fraction form
    479.75/662.54 = 413.22/x
  3. Step 3: Cross multiply
    479.75x = 662.54 × 413.22
  4. Step 4: Simplify right side
    479.75x = 273,772.71
  5. Step 5: Solve for x
    x = 273,772.71/479.75
  6. Step 6: Final answer
    x = 570.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.