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Finding the Third Proportional to 240.94 and 505.78

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Solution

The third proportional to 240.94 and 505.78 is: 1,061.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.94 : 505.78 = 505.78 : x
  2. Step 2: Convert to fraction form
    240.94/505.78 = 505.78/x
  3. Step 3: Cross multiply
    240.94x = 505.78 × 505.78
  4. Step 4: Simplify right side
    240.94x = 255,814.67
  5. Step 5: Solve for x
    x = 255,814.67/240.94
  6. Step 6: Final answer
    x = 1,061.75

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.