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Finding the Third Proportional to 353.25 and 623.13

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Solution

The third proportional to 353.25 and 623.13 is: 1,099.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.25 : 623.13 = 623.13 : x
  2. Step 2: Convert to fraction form
    353.25/623.13 = 623.13/x
  3. Step 3: Cross multiply
    353.25x = 623.13 × 623.13
  4. Step 4: Simplify right side
    353.25x = 388,284.77
  5. Step 5: Solve for x
    x = 388,284.77/353.25
  6. Step 6: Final answer
    x = 1,099.18

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.