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Finding the Third Proportional to 231.75 and 509.06

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Solution

The third proportional to 231.75 and 509.06 is: 1,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.75 : 509.06 = 509.06 : x
  2. Step 2: Convert to fraction form
    231.75/509.06 = 509.06/x
  3. Step 3: Cross multiply
    231.75x = 509.06 × 509.06
  4. Step 4: Simplify right side
    231.75x = 259,144.63
  5. Step 5: Solve for x
    x = 259,144.63/231.75
  6. Step 6: Final answer
    x = 1,118.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.