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Finding the Fourth Proportional to 191.08, 264 and 133.12

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Solution

The fourth proportional to 191.08, 264 and 133.12 is: 183.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.08 : 264 = 133.12 : x
  2. Step 2: Convert to fraction form
    191.08/264 = 133.12/x
  3. Step 3: Cross multiply
    191.08x = 264 × 133.12
  4. Step 4: Simplify right side
    191.08x = 35,143.68
  5. Step 5: Solve for x
    x = 35,143.68/191.08
  6. Step 6: Final answer
    x = 183.92

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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.