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Finding the Fourth Proportional to 297.99, 447.71 and 263.43

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Solution

The fourth proportional to 297.99, 447.71 and 263.43 is: 395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.99 : 447.71 = 263.43 : x
  2. Step 2: Convert to fraction form
    297.99/447.71 = 263.43/x
  3. Step 3: Cross multiply
    297.99x = 447.71 × 263.43
  4. Step 4: Simplify right side
    297.99x = 117,938.93
  5. Step 5: Solve for x
    x = 117,938.93/297.99
  6. Step 6: Final answer
    x = 395.78

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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.