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Finding the Third Proportional to 252.75 and 555.28

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Solution

The third proportional to 252.75 and 555.28 is: 1,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.75 : 555.28 = 555.28 : x
  2. Step 2: Convert to fraction form
    252.75/555.28 = 555.28/x
  3. Step 3: Cross multiply
    252.75x = 555.28 × 555.28
  4. Step 4: Simplify right side
    252.75x = 308,337.27
  5. Step 5: Solve for x
    x = 308,337.27/252.75
  6. Step 6: Final answer
    x = 1,219.93

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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.