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Finding the Fourth Proportional to 488.56, 674.04 and 299.44

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Solution

The fourth proportional to 488.56, 674.04 and 299.44 is: 413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.56 : 674.04 = 299.44 : x
  2. Step 2: Convert to fraction form
    488.56/674.04 = 299.44/x
  3. Step 3: Cross multiply
    488.56x = 674.04 × 299.44
  4. Step 4: Simplify right side
    488.56x = 201,834.54
  5. Step 5: Solve for x
    x = 201,834.54/488.56
  6. Step 6: Final answer
    x = 413.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.