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Finding the Fourth Proportional to 283.48, 391.09 and 166.97

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Solution

The fourth proportional to 283.48, 391.09 and 166.97 is: 230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.48 : 391.09 = 166.97 : x
  2. Step 2: Convert to fraction form
    283.48/391.09 = 166.97/x
  3. Step 3: Cross multiply
    283.48x = 391.09 × 166.97
  4. Step 4: Simplify right side
    283.48x = 65,300.30
  5. Step 5: Solve for x
    x = 65,300.30/283.48
  6. Step 6: Final answer
    x = 230.35

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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.