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Finding the Fourth Proportional to 200.88, 276.80 and 135.26

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Solution

The fourth proportional to 200.88, 276.80 and 135.26 is: 186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.88 : 276.80 = 135.26 : x
  2. Step 2: Convert to fraction form
    200.88/276.80 = 135.26/x
  3. Step 3: Cross multiply
    200.88x = 276.80 × 135.26
  4. Step 4: Simplify right side
    200.88x = 37,439.97
  5. Step 5: Solve for x
    x = 37,439.97/200.88
  6. Step 6: Final answer
    x = 186.38

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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.