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Finding the Fourth Proportional to 299.43, 449.15 and 116.79

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Solution

The fourth proportional to 299.43, 449.15 and 116.79 is: 175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.43 : 449.15 = 116.79 : x
  2. Step 2: Convert to fraction form
    299.43/449.15 = 116.79/x
  3. Step 3: Cross multiply
    299.43x = 449.15 × 116.79
  4. Step 4: Simplify right side
    299.43x = 52,455.64
  5. Step 5: Solve for x
    x = 52,455.64/299.43
  6. Step 6: Final answer
    x = 175.19

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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.