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Finding the Fourth Proportional to 283.86, 426 and 112.86

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Solution

The fourth proportional to 283.86, 426 and 112.86 is: 169.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.86 : 426 = 112.86 : x
  2. Step 2: Convert to fraction form
    283.86/426 = 112.86/x
  3. Step 3: Cross multiply
    283.86x = 426 × 112.86
  4. Step 4: Simplify right side
    283.86x = 48,078.36
  5. Step 5: Solve for x
    x = 48,078.36/283.86
  6. Step 6: Final answer
    x = 169.37

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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.