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Finding the Fourth Proportional to 220.71, 304.52 and 199.92

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Solution

The fourth proportional to 220.71, 304.52 and 199.92 is: 275.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.71 : 304.52 = 199.92 : x
  2. Step 2: Convert to fraction form
    220.71/304.52 = 199.92/x
  3. Step 3: Cross multiply
    220.71x = 304.52 × 199.92
  4. Step 4: Simplify right side
    220.71x = 60,878.64
  5. Step 5: Solve for x
    x = 60,878.64/220.71
  6. Step 6: Final answer
    x = 275.83

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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.