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Finding the Fourth Proportional to 191.43, 263.67 and 136.07

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Solution

The fourth proportional to 191.43, 263.67 and 136.07 is: 187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.43 : 263.67 = 136.07 : x
  2. Step 2: Convert to fraction form
    191.43/263.67 = 136.07/x
  3. Step 3: Cross multiply
    191.43x = 263.67 × 136.07
  4. Step 4: Simplify right side
    191.43x = 35,876.26
  5. Step 5: Solve for x
    x = 35,876.26/191.43
  6. Step 6: Final answer
    x = 187.41

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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.