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Finding the Fourth Proportional to 443.98, 665.97 and 170.11

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Solution

The fourth proportional to 443.98, 665.97 and 170.11 is: 255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.98 : 665.97 = 170.11 : x
  2. Step 2: Convert to fraction form
    443.98/665.97 = 170.11/x
  3. Step 3: Cross multiply
    443.98x = 665.97 × 170.11
  4. Step 4: Simplify right side
    443.98x = 113,283.98
  5. Step 5: Solve for x
    x = 113,283.98/443.98
  6. Step 6: Final answer
    x = 255.16

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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.