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Finding the Fourth Proportional to 220.19, 329.60 and 197.06

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Solution

The fourth proportional to 220.19, 329.60 and 197.06 is: 294.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.19 : 329.60 = 197.06 : x
  2. Step 2: Convert to fraction form
    220.19/329.60 = 197.06/x
  3. Step 3: Cross multiply
    220.19x = 329.60 × 197.06
  4. Step 4: Simplify right side
    220.19x = 64,949.82
  5. Step 5: Solve for x
    x = 64,949.82/220.19
  6. Step 6: Final answer
    x = 294.98

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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.