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Finding the Third Proportional to 286.88 and 623.44

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Solution

The third proportional to 286.88 and 623.44 is: 1,354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.88 : 623.44 = 623.44 : x
  2. Step 2: Convert to fraction form
    286.88/623.44 = 623.44/x
  3. Step 3: Cross multiply
    286.88x = 623.44 × 623.44
  4. Step 4: Simplify right side
    286.88x = 388,674.32
  5. Step 5: Solve for x
    x = 388,674.32/286.88
  6. Step 6: Final answer
    x = 1,354.86

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.