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Finding the Fourth Proportional to 413.39, 620.14 and 169.95

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Solution

The fourth proportional to 413.39, 620.14 and 169.95 is: 254.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.39 : 620.14 = 169.95 : x
  2. Step 2: Convert to fraction form
    413.39/620.14 = 169.95/x
  3. Step 3: Cross multiply
    413.39x = 620.14 × 169.95
  4. Step 4: Simplify right side
    413.39x = 105,392.79
  5. Step 5: Solve for x
    x = 105,392.79/413.39
  6. Step 6: Final answer
    x = 254.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.