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Finding the Fourth Proportional to 299.04, 448.20 and 190.80

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Solution

The fourth proportional to 299.04, 448.20 and 190.80 is: 285.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.04 : 448.20 = 190.80 : x
  2. Step 2: Convert to fraction form
    299.04/448.20 = 190.80/x
  3. Step 3: Cross multiply
    299.04x = 448.20 × 190.80
  4. Step 4: Simplify right side
    299.04x = 85,516.56
  5. Step 5: Solve for x
    x = 85,516.56/299.04
  6. Step 6: Final answer
    x = 285.97

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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.