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Finding the Fourth Proportional to 239.16, 327.21 and 238.14

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Solution

The fourth proportional to 239.16, 327.21 and 238.14 is: 325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.16 : 327.21 = 238.14 : x
  2. Step 2: Convert to fraction form
    239.16/327.21 = 238.14/x
  3. Step 3: Cross multiply
    239.16x = 327.21 × 238.14
  4. Step 4: Simplify right side
    239.16x = 77,920.90
  5. Step 5: Solve for x
    x = 77,920.90/239.16
  6. Step 6: Final answer
    x = 325.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.