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Finding the Fourth Proportional to 191.84, 286.09 and 167.60

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Solution

The fourth proportional to 191.84, 286.09 and 167.60 is: 249.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.84 : 286.09 = 167.60 : x
  2. Step 2: Convert to fraction form
    191.84/286.09 = 167.60/x
  3. Step 3: Cross multiply
    191.84x = 286.09 × 167.60
  4. Step 4: Simplify right side
    191.84x = 47,948.68
  5. Step 5: Solve for x
    x = 47,948.68/191.84
  6. Step 6: Final answer
    x = 249.94

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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.