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Finding the Fourth Proportional to 194.75, 268.46 and 153.23

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Solution

The fourth proportional to 194.75, 268.46 and 153.23 is: 211.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.75 : 268.46 = 153.23 : x
  2. Step 2: Convert to fraction form
    194.75/268.46 = 153.23/x
  3. Step 3: Cross multiply
    194.75x = 268.46 × 153.23
  4. Step 4: Simplify right side
    194.75x = 41,134.59
  5. Step 5: Solve for x
    x = 41,134.59/194.75
  6. Step 6: Final answer
    x = 211.22

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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.