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Finding the Fourth Proportional to 283.96, 423.38 and 276.87

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Solution

The fourth proportional to 283.96, 423.38 and 276.87 is: 412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.96 : 423.38 = 276.87 : x
  2. Step 2: Convert to fraction form
    283.96/423.38 = 276.87/x
  3. Step 3: Cross multiply
    283.96x = 423.38 × 276.87
  4. Step 4: Simplify right side
    283.96x = 117,219.56
  5. Step 5: Solve for x
    x = 117,219.56/283.96
  6. Step 6: Final answer
    x = 412.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.