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Finding the Fourth Proportional to 235.27, 350.20 and 231.81

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Solution

The fourth proportional to 235.27, 350.20 and 231.81 is: 345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.27 : 350.20 = 231.81 : x
  2. Step 2: Convert to fraction form
    235.27/350.20 = 231.81/x
  3. Step 3: Cross multiply
    235.27x = 350.20 × 231.81
  4. Step 4: Simplify right side
    235.27x = 81,179.86
  5. Step 5: Solve for x
    x = 81,179.86/235.27
  6. Step 6: Final answer
    x = 345.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.