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Finding the Fourth Proportional to 667.27, 1,000.53 and 301.71

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Solution

The fourth proportional to 667.27, 1,000.53 and 301.71 is: 452.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.27 : 1,000.53 = 301.71 : x
  2. Step 2: Convert to fraction form
    667.27/1,000.53 = 301.71/x
  3. Step 3: Cross multiply
    667.27x = 1,000.53 × 301.71
  4. Step 4: Simplify right side
    667.27x = 301,867.18
  5. Step 5: Solve for x
    x = 301,867.18/667.27
  6. Step 6: Final answer
    x = 452.39

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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.