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Finding the Fourth Proportional to 194.06, 291 and 91.34

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Solution

The fourth proportional to 194.06, 291 and 91.34 is: 136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.06 : 291 = 91.34 : x
  2. Step 2: Convert to fraction form
    194.06/291 = 91.34/x
  3. Step 3: Cross multiply
    194.06x = 291 × 91.34
  4. Step 4: Simplify right side
    194.06x = 26,579.94
  5. Step 5: Solve for x
    x = 26,579.94/194.06
  6. Step 6: Final answer
    x = 136.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.