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Finding the Fourth Proportional to 234.55, 325.95 and 231.66

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Solution

The fourth proportional to 234.55, 325.95 and 231.66 is: 321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.55 : 325.95 = 231.66 : x
  2. Step 2: Convert to fraction form
    234.55/325.95 = 231.66/x
  3. Step 3: Cross multiply
    234.55x = 325.95 × 231.66
  4. Step 4: Simplify right side
    234.55x = 75,509.58
  5. Step 5: Solve for x
    x = 75,509.58/234.55
  6. Step 6: Final answer
    x = 321.93

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.