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Finding the Fourth Proportional to 363.21, 500.76 and 231.99

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Solution

The fourth proportional to 363.21, 500.76 and 231.99 is: 319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.21 : 500.76 = 231.99 : x
  2. Step 2: Convert to fraction form
    363.21/500.76 = 231.99/x
  3. Step 3: Cross multiply
    363.21x = 500.76 × 231.99
  4. Step 4: Simplify right side
    363.21x = 116,171.31
  5. Step 5: Solve for x
    x = 116,171.31/363.21
  6. Step 6: Final answer
    x = 319.85

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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.