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Finding the Fourth Proportional to 413.44, 619.05 and 379.60

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Solution

The fourth proportional to 413.44, 619.05 and 379.60 is: 568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.44 : 619.05 = 379.60 : x
  2. Step 2: Convert to fraction form
    413.44/619.05 = 379.60/x
  3. Step 3: Cross multiply
    413.44x = 619.05 × 379.60
  4. Step 4: Simplify right side
    413.44x = 234,991.38
  5. Step 5: Solve for x
    x = 234,991.38/413.44
  6. Step 6: Final answer
    x = 568.38

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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.