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Finding the Third Proportional to 234.56 and 485.58

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Solution

The third proportional to 234.56 and 485.58 is: 1,005.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.56 : 485.58 = 485.58 : x
  2. Step 2: Convert to fraction form
    234.56/485.58 = 485.58/x
  3. Step 3: Cross multiply
    234.56x = 485.58 × 485.58
  4. Step 4: Simplify right side
    234.56x = 235,786.12
  5. Step 5: Solve for x
    x = 235,786.12/234.56
  6. Step 6: Final answer
    x = 1,005.22

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.