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Finding the Fourth Proportional to 194.13, 267.90 and 115.48

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Solution

The fourth proportional to 194.13, 267.90 and 115.48 is: 159.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.13 : 267.90 = 115.48 : x
  2. Step 2: Convert to fraction form
    194.13/267.90 = 115.48/x
  3. Step 3: Cross multiply
    194.13x = 267.90 × 115.48
  4. Step 4: Simplify right side
    194.13x = 30,936.51
  5. Step 5: Solve for x
    x = 30,936.51/194.13
  6. Step 6: Final answer
    x = 159.36

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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.