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Finding the Fourth Proportional to 235.17, 354.51 and 231.93

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Solution

The fourth proportional to 235.17, 354.51 and 231.93 is: 349.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.17 : 354.51 = 231.93 : x
  2. Step 2: Convert to fraction form
    235.17/354.51 = 231.93/x
  3. Step 3: Cross multiply
    235.17x = 354.51 × 231.93
  4. Step 4: Simplify right side
    235.17x = 82,221.50
  5. Step 5: Solve for x
    x = 82,221.50/235.17
  6. Step 6: Final answer
    x = 349.63

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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.