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Finding the Third Proportional to 91.31 and 192.94

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Solution

The third proportional to 91.31 and 192.94 is: 407.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.31 : 192.94 = 192.94 : x
  2. Step 2: Convert to fraction form
    91.31/192.94 = 192.94/x
  3. Step 3: Cross multiply
    91.31x = 192.94 × 192.94
  4. Step 4: Simplify right side
    91.31x = 37,224.88
  5. Step 5: Solve for x
    x = 37,224.88/91.31
  6. Step 6: Final answer
    x = 407.66

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.