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Finding the Fourth Proportional to 379.15, 523.18 and 268.66

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Solution

The fourth proportional to 379.15, 523.18 and 268.66 is: 370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.15 : 523.18 = 268.66 : x
  2. Step 2: Convert to fraction form
    379.15/523.18 = 268.66/x
  3. Step 3: Cross multiply
    379.15x = 523.18 × 268.66
  4. Step 4: Simplify right side
    379.15x = 140,555.56
  5. Step 5: Solve for x
    x = 140,555.56/379.15
  6. Step 6: Final answer
    x = 370.71

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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.