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Finding the Fourth Proportional to 195.80, 294.86 and 163.64

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Solution

The fourth proportional to 195.80, 294.86 and 163.64 is: 246.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.80 : 294.86 = 163.64 : x
  2. Step 2: Convert to fraction form
    195.80/294.86 = 163.64/x
  3. Step 3: Cross multiply
    195.80x = 294.86 × 163.64
  4. Step 4: Simplify right side
    195.80x = 48,250.89
  5. Step 5: Solve for x
    x = 48,250.89/195.80
  6. Step 6: Final answer
    x = 246.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.