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Finding the Fourth Proportional to 239.98, 329.44 and 233.94

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Solution

The fourth proportional to 239.98, 329.44 and 233.94 is: 321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.98 : 329.44 = 233.94 : x
  2. Step 2: Convert to fraction form
    239.98/329.44 = 233.94/x
  3. Step 3: Cross multiply
    239.98x = 329.44 × 233.94
  4. Step 4: Simplify right side
    239.98x = 77,069.19
  5. Step 5: Solve for x
    x = 77,069.19/239.98
  6. Step 6: Final answer
    x = 321.15

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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.