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Finding the Fourth Proportional to 220.54, 303.62 and 191.44

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Solution

The fourth proportional to 220.54, 303.62 and 191.44 is: 263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.54 : 303.62 = 191.44 : x
  2. Step 2: Convert to fraction form
    220.54/303.62 = 191.44/x
  3. Step 3: Cross multiply
    220.54x = 303.62 × 191.44
  4. Step 4: Simplify right side
    220.54x = 58,125.01
  5. Step 5: Solve for x
    x = 58,125.01/220.54
  6. Step 6: Final answer
    x = 263.56

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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.