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Finding the Fourth Proportional to 443.69, 665.46 and 119.03

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Solution

The fourth proportional to 443.69, 665.46 and 119.03 is: 178.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.69 : 665.46 = 119.03 : x
  2. Step 2: Convert to fraction form
    443.69/665.46 = 119.03/x
  3. Step 3: Cross multiply
    443.69x = 665.46 × 119.03
  4. Step 4: Simplify right side
    443.69x = 79,209.70
  5. Step 5: Solve for x
    x = 79,209.70/443.69
  6. Step 6: Final answer
    x = 178.52

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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.