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Finding the Fourth Proportional to 235.96, 351.41 and 231.40

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Solution

The fourth proportional to 235.96, 351.41 and 231.40 is: 344.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.96 : 351.41 = 231.40 : x
  2. Step 2: Convert to fraction form
    235.96/351.41 = 231.40/x
  3. Step 3: Cross multiply
    235.96x = 351.41 × 231.40
  4. Step 4: Simplify right side
    235.96x = 81,316.27
  5. Step 5: Solve for x
    x = 81,316.27/235.96
  6. Step 6: Final answer
    x = 344.62

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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.