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Finding the Fourth Proportional to 234.66, 323.79 and 136.35

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Solution

The fourth proportional to 234.66, 323.79 and 136.35 is: 188.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.66 : 323.79 = 136.35 : x
  2. Step 2: Convert to fraction form
    234.66/323.79 = 136.35/x
  3. Step 3: Cross multiply
    234.66x = 323.79 × 136.35
  4. Step 4: Simplify right side
    234.66x = 44,148.77
  5. Step 5: Solve for x
    x = 44,148.77/234.66
  6. Step 6: Final answer
    x = 188.14

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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.