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Finding the Fourth Proportional to 234.51, 323.24 and 187.80

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Solution

The fourth proportional to 234.51, 323.24 and 187.80 is: 258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.51 : 323.24 = 187.80 : x
  2. Step 2: Convert to fraction form
    234.51/323.24 = 187.80/x
  3. Step 3: Cross multiply
    234.51x = 323.24 × 187.80
  4. Step 4: Simplify right side
    234.51x = 60,704.47
  5. Step 5: Solve for x
    x = 60,704.47/234.51
  6. Step 6: Final answer
    x = 258.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.