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Finding the Fourth Proportional to 240.12, 360.24 and 199.89

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Solution

The fourth proportional to 240.12, 360.24 and 199.89 is: 299.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.12 : 360.24 = 199.89 : x
  2. Step 2: Convert to fraction form
    240.12/360.24 = 199.89/x
  3. Step 3: Cross multiply
    240.12x = 360.24 × 199.89
  4. Step 4: Simplify right side
    240.12x = 72,008.37
  5. Step 5: Solve for x
    x = 72,008.37/240.12
  6. Step 6: Final answer
    x = 299.88

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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.