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Finding the Fourth Proportional to 284.44, 426.76 and 140.26

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Solution

The fourth proportional to 284.44, 426.76 and 140.26 is: 210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.44 : 426.76 = 140.26 : x
  2. Step 2: Convert to fraction form
    284.44/426.76 = 140.26/x
  3. Step 3: Cross multiply
    284.44x = 426.76 × 140.26
  4. Step 4: Simplify right side
    284.44x = 59,855.94
  5. Step 5: Solve for x
    x = 59,855.94/284.44
  6. Step 6: Final answer
    x = 210.44

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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.