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Finding the Third Proportional to 255.13 and 550.63

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Solution

The third proportional to 255.13 and 550.63 is: 1,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.13 : 550.63 = 550.63 : x
  2. Step 2: Convert to fraction form
    255.13/550.63 = 550.63/x
  3. Step 3: Cross multiply
    255.13x = 550.63 × 550.63
  4. Step 4: Simplify right side
    255.13x = 303,187.89
  5. Step 5: Solve for x
    x = 303,187.89/255.13
  6. Step 6: Final answer
    x = 1,188.39

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.