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Finding the Fourth Proportional to 441.98, 609.90 and 255.53

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Solution

The fourth proportional to 441.98, 609.90 and 255.53 is: 352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.98 : 609.90 = 255.53 : x
  2. Step 2: Convert to fraction form
    441.98/609.90 = 255.53/x
  3. Step 3: Cross multiply
    441.98x = 609.90 × 255.53
  4. Step 4: Simplify right side
    441.98x = 155,844.70
  5. Step 5: Solve for x
    x = 155,844.70/441.98
  6. Step 6: Final answer
    x = 352.61

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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.