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Finding the Fourth Proportional to 397.91, 599.65 and 379.37

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Solution

The fourth proportional to 397.91, 599.65 and 379.37 is: 571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.91 : 599.65 = 379.37 : x
  2. Step 2: Convert to fraction form
    397.91/599.65 = 379.37/x
  3. Step 3: Cross multiply
    397.91x = 599.65 × 379.37
  4. Step 4: Simplify right side
    397.91x = 227,489.77
  5. Step 5: Solve for x
    x = 227,489.77/397.91
  6. Step 6: Final answer
    x = 571.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.