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Finding the Fourth Proportional to 283.28, 423.46 and 197.84

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Solution

The fourth proportional to 283.28, 423.46 and 197.84 is: 295.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.28 : 423.46 = 197.84 : x
  2. Step 2: Convert to fraction form
    283.28/423.46 = 197.84/x
  3. Step 3: Cross multiply
    283.28x = 423.46 × 197.84
  4. Step 4: Simplify right side
    283.28x = 83,777.33
  5. Step 5: Solve for x
    x = 83,777.33/283.28
  6. Step 6: Final answer
    x = 295.74

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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.