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Finding the Fourth Proportional to 239.99, 359.66 and 199.49

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Solution

The fourth proportional to 239.99, 359.66 and 199.49 is: 298.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.99 : 359.66 = 199.49 : x
  2. Step 2: Convert to fraction form
    239.99/359.66 = 199.49/x
  3. Step 3: Cross multiply
    239.99x = 359.66 × 199.49
  4. Step 4: Simplify right side
    239.99x = 71,745.78
  5. Step 5: Solve for x
    x = 71,745.78/239.99
  6. Step 6: Final answer
    x = 298.96

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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.