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Finding the Fourth Proportional to 200.33, 276.78 and 156.93

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Solution

The fourth proportional to 200.33, 276.78 and 156.93 is: 216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.33 : 276.78 = 156.93 : x
  2. Step 2: Convert to fraction form
    200.33/276.78 = 156.93/x
  3. Step 3: Cross multiply
    200.33x = 276.78 × 156.93
  4. Step 4: Simplify right side
    200.33x = 43,435.09
  5. Step 5: Solve for x
    x = 43,435.09/200.33
  6. Step 6: Final answer
    x = 216.82

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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.