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Finding the Fourth Proportional to 1,193.99, 1,791.09 and 413.87

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Solution

The fourth proportional to 1,193.99, 1,791.09 and 413.87 is: 620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.99 : 1,791.09 = 413.87 : x
  2. Step 2: Convert to fraction form
    1,193.99/1,791.09 = 413.87/x
  3. Step 3: Cross multiply
    1,193.99x = 1,791.09 × 413.87
  4. Step 4: Simplify right side
    1,193.99x = 741,269.46
  5. Step 5: Solve for x
    x = 741,269.46/1,193.99
  6. Step 6: Final answer
    x = 620.84

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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.