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Finding the Third Proportional to 258.25 and 525.25

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Solution

The third proportional to 258.25 and 525.25 is: 1,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.25 : 525.25 = 525.25 : x
  2. Step 2: Convert to fraction form
    258.25/525.25 = 525.25/x
  3. Step 3: Cross multiply
    258.25x = 525.25 × 525.25
  4. Step 4: Simplify right side
    258.25x = 275,887.56
  5. Step 5: Solve for x
    x = 275,887.56/258.25
  6. Step 6: Final answer
    x = 1,068.30

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.