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Finding the Fourth Proportional to 191.19, 264 and 125.82

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Solution

The fourth proportional to 191.19, 264 and 125.82 is: 173.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.19 : 264 = 125.82 : x
  2. Step 2: Convert to fraction form
    191.19/264 = 125.82/x
  3. Step 3: Cross multiply
    191.19x = 264 × 125.82
  4. Step 4: Simplify right side
    191.19x = 33,216.48
  5. Step 5: Solve for x
    x = 33,216.48/191.19
  6. Step 6: Final answer
    x = 173.74

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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.