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Finding the Third Proportional to 255.38 and 560.53

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Solution

The third proportional to 255.38 and 560.53 is: 1,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.38 : 560.53 = 560.53 : x
  2. Step 2: Convert to fraction form
    255.38/560.53 = 560.53/x
  3. Step 3: Cross multiply
    255.38x = 560.53 × 560.53
  4. Step 4: Simplify right side
    255.38x = 314,195.28
  5. Step 5: Solve for x
    x = 314,195.28/255.38
  6. Step 6: Final answer
    x = 1,230.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.