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Finding the Fourth Proportional to 194.94, 269.05 and 117.31

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Solution

The fourth proportional to 194.94, 269.05 and 117.31 is: 161.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.94 : 269.05 = 117.31 : x
  2. Step 2: Convert to fraction form
    194.94/269.05 = 117.31/x
  3. Step 3: Cross multiply
    194.94x = 269.05 × 117.31
  4. Step 4: Simplify right side
    194.94x = 31,562.26
  5. Step 5: Solve for x
    x = 31,562.26/194.94
  6. Step 6: Final answer
    x = 161.91

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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.