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Finding the Fourth Proportional to 283.55, 391.01 and 213.48

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Solution

The fourth proportional to 283.55, 391.01 and 213.48 is: 294.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.55 : 391.01 = 213.48 : x
  2. Step 2: Convert to fraction form
    283.55/391.01 = 213.48/x
  3. Step 3: Cross multiply
    283.55x = 391.01 × 213.48
  4. Step 4: Simplify right side
    283.55x = 83,471.75
  5. Step 5: Solve for x
    x = 83,471.75/283.55
  6. Step 6: Final answer
    x = 294.39

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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.