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Finding the Fourth Proportional to 479.31, 716.95 and 413.34

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Solution

The fourth proportional to 479.31, 716.95 and 413.34 is: 618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.31 : 716.95 = 413.34 : x
  2. Step 2: Convert to fraction form
    479.31/716.95 = 413.34/x
  3. Step 3: Cross multiply
    479.31x = 716.95 × 413.34
  4. Step 4: Simplify right side
    479.31x = 296,344.11
  5. Step 5: Solve for x
    x = 296,344.11/479.31
  6. Step 6: Final answer
    x = 618.27

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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.