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Finding the Fourth Proportional to 219.74, 329.52 and 97.98

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Solution

The fourth proportional to 219.74, 329.52 and 97.98 is: 146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.74 : 329.52 = 97.98 : x
  2. Step 2: Convert to fraction form
    219.74/329.52 = 97.98/x
  3. Step 3: Cross multiply
    219.74x = 329.52 × 97.98
  4. Step 4: Simplify right side
    219.74x = 32,286.37
  5. Step 5: Solve for x
    x = 32,286.37/219.74
  6. Step 6: Final answer
    x = 146.93

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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.