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Finding the Fourth Proportional to 441.69, 662.68 and 133.55

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Solution

The fourth proportional to 441.69, 662.68 and 133.55 is: 200.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.69 : 662.68 = 133.55 : x
  2. Step 2: Convert to fraction form
    441.69/662.68 = 133.55/x
  3. Step 3: Cross multiply
    441.69x = 662.68 × 133.55
  4. Step 4: Simplify right side
    441.69x = 88,500.25
  5. Step 5: Solve for x
    x = 88,500.25/441.69
  6. Step 6: Final answer
    x = 200.37

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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.