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Finding the Fourth Proportional to 413.92, 620.12 and 358.88

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Solution

The fourth proportional to 413.92, 620.12 and 358.88 is: 537.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.92 : 620.12 = 358.88 : x
  2. Step 2: Convert to fraction form
    413.92/620.12 = 358.88/x
  3. Step 3: Cross multiply
    413.92x = 620.12 × 358.88
  4. Step 4: Simplify right side
    413.92x = 222,548.67
  5. Step 5: Solve for x
    x = 222,548.67/413.92
  6. Step 6: Final answer
    x = 537.66

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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.