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Finding the Fourth Proportional to 283.93, 391.36 and 200.90

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Solution

The fourth proportional to 283.93, 391.36 and 200.90 is: 276.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.93 : 391.36 = 200.90 : x
  2. Step 2: Convert to fraction form
    283.93/391.36 = 200.90/x
  3. Step 3: Cross multiply
    283.93x = 391.36 × 200.90
  4. Step 4: Simplify right side
    283.93x = 78,624.22
  5. Step 5: Solve for x
    x = 78,624.22/283.93
  6. Step 6: Final answer
    x = 276.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.