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Finding the Fourth Proportional to 443.62, 665.05 and 169.91

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Solution

The fourth proportional to 443.62, 665.05 and 169.91 is: 254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.62 : 665.05 = 169.91 : x
  2. Step 2: Convert to fraction form
    443.62/665.05 = 169.91/x
  3. Step 3: Cross multiply
    443.62x = 665.05 × 169.91
  4. Step 4: Simplify right side
    443.62x = 112,998.65
  5. Step 5: Solve for x
    x = 112,998.65/443.62
  6. Step 6: Final answer
    x = 254.72

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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.