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Finding the Fourth Proportional to 191.47, 285.94 and 167.17

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Solution

The fourth proportional to 191.47, 285.94 and 167.17 is: 249.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.47 : 285.94 = 167.17 : x
  2. Step 2: Convert to fraction form
    191.47/285.94 = 167.17/x
  3. Step 3: Cross multiply
    191.47x = 285.94 × 167.17
  4. Step 4: Simplify right side
    191.47x = 47,800.59
  5. Step 5: Solve for x
    x = 47,800.59/191.47
  6. Step 6: Final answer
    x = 249.65

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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.