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Finding the Fourth Proportional to 443.88, 667.00 and 238.60

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Solution

The fourth proportional to 443.88, 667.00 and 238.60 is: 358.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.88 : 667.00 = 238.60 : x
  2. Step 2: Convert to fraction form
    443.88/667.00 = 238.60/x
  3. Step 3: Cross multiply
    443.88x = 667.00 × 238.60
  4. Step 4: Simplify right side
    443.88x = 159,143.58
  5. Step 5: Solve for x
    x = 159,143.58/443.88
  6. Step 6: Final answer
    x = 358.53

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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.