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Finding the Fourth Proportional to 443.87, 665.65 and 169.89

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Solution

The fourth proportional to 443.87, 665.65 and 169.89 is: 254.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.87 : 665.65 = 169.89 : x
  2. Step 2: Convert to fraction form
    443.87/665.65 = 169.89/x
  3. Step 3: Cross multiply
    443.87x = 665.65 × 169.89
  4. Step 4: Simplify right side
    443.87x = 113,087.28
  5. Step 5: Solve for x
    x = 113,087.28/443.87
  6. Step 6: Final answer
    x = 254.78

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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.