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Finding the Fourth Proportional to 191.73, 286.10 and 170.40

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Solution

The fourth proportional to 191.73, 286.10 and 170.40 is: 254.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.73 : 286.10 = 170.40 : x
  2. Step 2: Convert to fraction form
    191.73/286.10 = 170.40/x
  3. Step 3: Cross multiply
    191.73x = 286.10 × 170.40
  4. Step 4: Simplify right side
    191.73x = 48,750.59
  5. Step 5: Solve for x
    x = 48,750.59/191.73
  6. Step 6: Final answer
    x = 254.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.