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Finding the Fourth Proportional to 404.19, 605.88 and 281.88

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Solution

The fourth proportional to 404.19, 605.88 and 281.88 is: 422.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.19 : 605.88 = 281.88 : x
  2. Step 2: Convert to fraction form
    404.19/605.88 = 281.88/x
  3. Step 3: Cross multiply
    404.19x = 605.88 × 281.88
  4. Step 4: Simplify right side
    404.19x = 170,785.45
  5. Step 5: Solve for x
    x = 170,785.45/404.19
  6. Step 6: Final answer
    x = 422.54

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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.