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Finding the Fourth Proportional to 194.24, 291.15 and 97.85

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Solution

The fourth proportional to 194.24, 291.15 and 97.85 is: 146.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.24 : 291.15 = 97.85 : x
  2. Step 2: Convert to fraction form
    194.24/291.15 = 97.85/x
  3. Step 3: Cross multiply
    194.24x = 291.15 × 97.85
  4. Step 4: Simplify right side
    194.24x = 28,487.33
  5. Step 5: Solve for x
    x = 28,487.33/194.24
  6. Step 6: Final answer
    x = 146.66

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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.