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Finding the Fourth Proportional to 205.63, 283.70 and 118.29

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Solution

The fourth proportional to 205.63, 283.70 and 118.29 is: 163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.63 : 283.70 = 118.29 : x
  2. Step 2: Convert to fraction form
    205.63/283.70 = 118.29/x
  3. Step 3: Cross multiply
    205.63x = 283.70 × 118.29
  4. Step 4: Simplify right side
    205.63x = 33,558.87
  5. Step 5: Solve for x
    x = 33,558.87/205.63
  6. Step 6: Final answer
    x = 163.20

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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.