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Finding the Fourth Proportional to 267.64, 369.44 and 189.39

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Solution

The fourth proportional to 267.64, 369.44 and 189.39 is: 261.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.64 : 369.44 = 189.39 : x
  2. Step 2: Convert to fraction form
    267.64/369.44 = 189.39/x
  3. Step 3: Cross multiply
    267.64x = 369.44 × 189.39
  4. Step 4: Simplify right side
    267.64x = 69,968.24
  5. Step 5: Solve for x
    x = 69,968.24/267.64
  6. Step 6: Final answer
    x = 261.43

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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.