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Finding the Fourth Proportional to 205.67, 283.77 and 118.40

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Solution

The fourth proportional to 205.67, 283.77 and 118.40 is: 163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.67 : 283.77 = 118.40 : x
  2. Step 2: Convert to fraction form
    205.67/283.77 = 118.40/x
  3. Step 3: Cross multiply
    205.67x = 283.77 × 118.40
  4. Step 4: Simplify right side
    205.67x = 33,596.95
  5. Step 5: Solve for x
    x = 33,596.95/205.67
  6. Step 6: Final answer
    x = 163.35

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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.