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Finding the Fourth Proportional to 299.91, 448.83 and 238.42

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Solution

The fourth proportional to 299.91, 448.83 and 238.42 is: 356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.91 : 448.83 = 238.42 : x
  2. Step 2: Convert to fraction form
    299.91/448.83 = 238.42/x
  3. Step 3: Cross multiply
    299.91x = 448.83 × 238.42
  4. Step 4: Simplify right side
    299.91x = 107,008.93
  5. Step 5: Solve for x
    x = 107,008.93/299.91
  6. Step 6: Final answer
    x = 356.80

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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.