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Finding the Third Proportional to 191 and 392.13

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Solution

The third proportional to 191 and 392.13 is: 805.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191 : 392.13 = 392.13 : x
  2. Step 2: Convert to fraction form
    191/392.13 = 392.13/x
  3. Step 3: Cross multiply
    191x = 392.13 × 392.13
  4. Step 4: Simplify right side
    191x = 153,762.02
  5. Step 5: Solve for x
    x = 153,762.02/191
  6. Step 6: Final answer
    x = 805.04

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.