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Finding the Fourth Proportional to 413.38, 619.90 and 153.33

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Solution

The fourth proportional to 413.38, 619.90 and 153.33 is: 229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.38 : 619.90 = 153.33 : x
  2. Step 2: Convert to fraction form
    413.38/619.90 = 153.33/x
  3. Step 3: Cross multiply
    413.38x = 619.90 × 153.33
  4. Step 4: Simplify right side
    413.38x = 95,049.27
  5. Step 5: Solve for x
    x = 95,049.27/413.38
  6. Step 6: Final answer
    x = 229.93

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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.