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Finding the Fourth Proportional to 194.81, 269.12 and 170.51

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Solution

The fourth proportional to 194.81, 269.12 and 170.51 is: 235.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.81 : 269.12 = 170.51 : x
  2. Step 2: Convert to fraction form
    194.81/269.12 = 170.51/x
  3. Step 3: Cross multiply
    194.81x = 269.12 × 170.51
  4. Step 4: Simplify right side
    194.81x = 45,886.73
  5. Step 5: Solve for x
    x = 45,886.73/194.81
  6. Step 6: Final answer
    x = 235.55

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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.