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Finding the Fourth Proportional to 484.37, 667.90 and 379.27

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Solution

The fourth proportional to 484.37, 667.90 and 379.27 is: 522.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.37 : 667.90 = 379.27 : x
  2. Step 2: Convert to fraction form
    484.37/667.90 = 379.27/x
  3. Step 3: Cross multiply
    484.37x = 667.90 × 379.27
  4. Step 4: Simplify right side
    484.37x = 253,312.54
  5. Step 5: Solve for x
    x = 253,312.54/484.37
  6. Step 6: Final answer
    x = 522.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.