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Finding the Fourth Proportional to 197.95, 294.98 and 191.42

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Solution

The fourth proportional to 197.95, 294.98 and 191.42 is: 285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.95 : 294.98 = 191.42 : x
  2. Step 2: Convert to fraction form
    197.95/294.98 = 191.42/x
  3. Step 3: Cross multiply
    197.95x = 294.98 × 191.42
  4. Step 4: Simplify right side
    197.95x = 56,465.07
  5. Step 5: Solve for x
    x = 56,465.07/197.95
  6. Step 6: Final answer
    x = 285.25

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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.