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Finding the Fourth Proportional to 200.71, 276.93 and 122.06

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Solution

The fourth proportional to 200.71, 276.93 and 122.06 is: 168.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.71 : 276.93 = 122.06 : x
  2. Step 2: Convert to fraction form
    200.71/276.93 = 122.06/x
  3. Step 3: Cross multiply
    200.71x = 276.93 × 122.06
  4. Step 4: Simplify right side
    200.71x = 33,802.54
  5. Step 5: Solve for x
    x = 33,802.54/200.71
  6. Step 6: Final answer
    x = 168.42

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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.