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Finding the Fourth Proportional to 235.17, 350.87 and 231.53

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Solution

The fourth proportional to 235.17, 350.87 and 231.53 is: 345.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.17 : 350.87 = 231.53 : x
  2. Step 2: Convert to fraction form
    235.17/350.87 = 231.53/x
  3. Step 3: Cross multiply
    235.17x = 350.87 × 231.53
  4. Step 4: Simplify right side
    235.17x = 81,234.02
  5. Step 5: Solve for x
    x = 81,234.02/235.17
  6. Step 6: Final answer
    x = 345.43

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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.