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Finding the Fourth Proportional to 207.32, 287.84 and 201.38

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Solution

The fourth proportional to 207.32, 287.84 and 201.38 is: 279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.32 : 287.84 = 201.38 : x
  2. Step 2: Convert to fraction form
    207.32/287.84 = 201.38/x
  3. Step 3: Cross multiply
    207.32x = 287.84 × 201.38
  4. Step 4: Simplify right side
    207.32x = 57,965.22
  5. Step 5: Solve for x
    x = 57,965.22/207.32
  6. Step 6: Final answer
    x = 279.59

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.