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Finding the Fourth Proportional to 191.34, 263.86 and 124.97

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Solution

The fourth proportional to 191.34, 263.86 and 124.97 is: 172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.34 : 263.86 = 124.97 : x
  2. Step 2: Convert to fraction form
    191.34/263.86 = 124.97/x
  3. Step 3: Cross multiply
    191.34x = 263.86 × 124.97
  4. Step 4: Simplify right side
    191.34x = 32,973.94
  5. Step 5: Solve for x
    x = 32,973.94/191.34
  6. Step 6: Final answer
    x = 172.33

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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.