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Finding the Fourth Proportional to 197.02, 296.07 and 120.21

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Solution

The fourth proportional to 197.02, 296.07 and 120.21 is: 180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.02 : 296.07 = 120.21 : x
  2. Step 2: Convert to fraction form
    197.02/296.07 = 120.21/x
  3. Step 3: Cross multiply
    197.02x = 296.07 × 120.21
  4. Step 4: Simplify right side
    197.02x = 35,589.09
  5. Step 5: Solve for x
    x = 35,589.09/197.02
  6. Step 6: Final answer
    x = 180.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.