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Finding the Fourth Proportional to 234.18, 323.18 and 130.68

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Solution

The fourth proportional to 234.18, 323.18 and 130.68 is: 180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.18 : 323.18 = 130.68 : x
  2. Step 2: Convert to fraction form
    234.18/323.18 = 130.68/x
  3. Step 3: Cross multiply
    234.18x = 323.18 × 130.68
  4. Step 4: Simplify right side
    234.18x = 42,233.16
  5. Step 5: Solve for x
    x = 42,233.16/234.18
  6. Step 6: Final answer
    x = 180.34

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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.