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Finding the Fourth Proportional to 443.98, 665.94 and 119.39

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Solution

The fourth proportional to 443.98, 665.94 and 119.39 is: 179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.98 : 665.94 = 119.39 : x
  2. Step 2: Convert to fraction form
    443.98/665.94 = 119.39/x
  3. Step 3: Cross multiply
    443.98x = 665.94 × 119.39
  4. Step 4: Simplify right side
    443.98x = 79,506.58
  5. Step 5: Solve for x
    x = 79,506.58/443.98
  6. Step 6: Final answer
    x = 179.08

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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.