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Finding the Fourth Proportional to 300.50, 414.69 and 197.18

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Solution

The fourth proportional to 300.50, 414.69 and 197.18 is: 272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.50 : 414.69 = 197.18 : x
  2. Step 2: Convert to fraction form
    300.50/414.69 = 197.18/x
  3. Step 3: Cross multiply
    300.50x = 414.69 × 197.18
  4. Step 4: Simplify right side
    300.50x = 81,768.57
  5. Step 5: Solve for x
    x = 81,768.57/300.50
  6. Step 6: Final answer
    x = 272.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.