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Finding the Fourth Proportional to 284.26, 426.65 and 119.85

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Solution

The fourth proportional to 284.26, 426.65 and 119.85 is: 179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.26 : 426.65 = 119.85 : x
  2. Step 2: Convert to fraction form
    284.26/426.65 = 119.85/x
  3. Step 3: Cross multiply
    284.26x = 426.65 × 119.85
  4. Step 4: Simplify right side
    284.26x = 51,133.00
  5. Step 5: Solve for x
    x = 51,133.00/284.26
  6. Step 6: Final answer
    x = 179.88

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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.