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Finding the Fourth Proportional to 197.45, 294.80 and 195.50

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Solution

The fourth proportional to 197.45, 294.80 and 195.50 is: 291.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.45 : 294.80 = 195.50 : x
  2. Step 2: Convert to fraction form
    197.45/294.80 = 195.50/x
  3. Step 3: Cross multiply
    197.45x = 294.80 × 195.50
  4. Step 4: Simplify right side
    197.45x = 57,630.95
  5. Step 5: Solve for x
    x = 57,630.95/197.45
  6. Step 6: Final answer
    x = 291.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.