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Finding the Fourth Proportional to 219.60, 303.72 and 196.25

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Solution

The fourth proportional to 219.60, 303.72 and 196.25 is: 271.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.60 : 303.72 = 196.25 : x
  2. Step 2: Convert to fraction form
    219.60/303.72 = 196.25/x
  3. Step 3: Cross multiply
    219.60x = 303.72 × 196.25
  4. Step 4: Simplify right side
    219.60x = 59,603.65
  5. Step 5: Solve for x
    x = 59,603.65/219.60
  6. Step 6: Final answer
    x = 271.42

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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.