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Finding the Fourth Proportional to 225.84, 339.18 and 197.16

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Solution

The fourth proportional to 225.84, 339.18 and 197.16 is: 296.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.84 : 339.18 = 197.16 : x
  2. Step 2: Convert to fraction form
    225.84/339.18 = 197.16/x
  3. Step 3: Cross multiply
    225.84x = 339.18 × 197.16
  4. Step 4: Simplify right side
    225.84x = 66,872.73
  5. Step 5: Solve for x
    x = 66,872.73/225.84
  6. Step 6: Final answer
    x = 296.11

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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.