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Finding the Fourth Proportional to 205.66, 283.98 and 159.22

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Solution

The fourth proportional to 205.66, 283.98 and 159.22 is: 219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.66 : 283.98 = 159.22 : x
  2. Step 2: Convert to fraction form
    205.66/283.98 = 159.22/x
  3. Step 3: Cross multiply
    205.66x = 283.98 × 159.22
  4. Step 4: Simplify right side
    205.66x = 45,215.30
  5. Step 5: Solve for x
    x = 45,215.30/205.66
  6. Step 6: Final answer
    x = 219.85

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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.