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Finding the Fourth Proportional to 299.03, 447.95 and 266.85

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Solution

The fourth proportional to 299.03, 447.95 and 266.85 is: 399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.03 : 447.95 = 266.85 : x
  2. Step 2: Convert to fraction form
    299.03/447.95 = 266.85/x
  3. Step 3: Cross multiply
    299.03x = 447.95 × 266.85
  4. Step 4: Simplify right side
    299.03x = 119,536.12
  5. Step 5: Solve for x
    x = 119,536.12/299.03
  6. Step 6: Final answer
    x = 399.75

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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.