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Finding the Third Proportional to 153.19 and 231.14

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Solution

The third proportional to 153.19 and 231.14 is: 348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.19 : 231.14 = 231.14 : x
  2. Step 2: Convert to fraction form
    153.19/231.14 = 231.14/x
  3. Step 3: Cross multiply
    153.19x = 231.14 × 231.14
  4. Step 4: Simplify right side
    153.19x = 53,425.99
  5. Step 5: Solve for x
    x = 53,425.99/153.19
  6. Step 6: Final answer
    x = 348.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.