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Finding the Third Proportional to 99 and 153.56

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Solution

The third proportional to 99 and 153.56 is: 238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99 : 153.56 = 153.56 : x
  2. Step 2: Convert to fraction form
    99/153.56 = 153.56/x
  3. Step 3: Cross multiply
    99x = 153.56 × 153.56
  4. Step 4: Simplify right side
    99x = 23,581.44
  5. Step 5: Solve for x
    x = 23,581.44/99
  6. Step 6: Final answer
    x = 238.20

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.