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Finding the Fourth Proportional to 239.49, 360 and 198.54

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Solution

The fourth proportional to 239.49, 360 and 198.54 is: 298.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.49 : 360 = 198.54 : x
  2. Step 2: Convert to fraction form
    239.49/360 = 198.54/x
  3. Step 3: Cross multiply
    239.49x = 360 × 198.54
  4. Step 4: Simplify right side
    239.49x = 71,474.40
  5. Step 5: Solve for x
    x = 71,474.40/239.49
  6. Step 6: Final answer
    x = 298.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.