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Finding the Fourth Proportional to 200.71, 302.46 and 191.44

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Solution

The fourth proportional to 200.71, 302.46 and 191.44 is: 288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.71 : 302.46 = 191.44 : x
  2. Step 2: Convert to fraction form
    200.71/302.46 = 191.44/x
  3. Step 3: Cross multiply
    200.71x = 302.46 × 191.44
  4. Step 4: Simplify right side
    200.71x = 57,902.94
  5. Step 5: Solve for x
    x = 57,902.94/200.71
  6. Step 6: Final answer
    x = 288.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.