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Finding the Fourth Proportional to 194.82, 268.83 and 117.18

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Solution

The fourth proportional to 194.82, 268.83 and 117.18 is: 161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.82 : 268.83 = 117.18 : x
  2. Step 2: Convert to fraction form
    194.82/268.83 = 117.18/x
  3. Step 3: Cross multiply
    194.82x = 268.83 × 117.18
  4. Step 4: Simplify right side
    194.82x = 31,501.50
  5. Step 5: Solve for x
    x = 31,501.50/194.82
  6. Step 6: Final answer
    x = 161.70

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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.