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Finding the Fourth Proportional to 299.28, 448.95 and 106.92

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Solution

The fourth proportional to 299.28, 448.95 and 106.92 is: 160.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.28 : 448.95 = 106.92 : x
  2. Step 2: Convert to fraction form
    299.28/448.95 = 106.92/x
  3. Step 3: Cross multiply
    299.28x = 448.95 × 106.92
  4. Step 4: Simplify right side
    299.28x = 48,001.73
  5. Step 5: Solve for x
    x = 48,001.73/299.28
  6. Step 6: Final answer
    x = 160.39

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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.