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Finding the Fourth Proportional to 191.52, 286.55 and 117.41

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Solution

The fourth proportional to 191.52, 286.55 and 117.41 is: 175.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.52 : 286.55 = 117.41 : x
  2. Step 2: Convert to fraction form
    191.52/286.55 = 117.41/x
  3. Step 3: Cross multiply
    191.52x = 286.55 × 117.41
  4. Step 4: Simplify right side
    191.52x = 33,644.94
  5. Step 5: Solve for x
    x = 33,644.94/191.52
  6. Step 6: Final answer
    x = 175.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.