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Finding the Third Proportional to 400.25 and 607.88

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Solution

The third proportional to 400.25 and 607.88 is: 923.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.25 : 607.88 = 607.88 : x
  2. Step 2: Convert to fraction form
    400.25/607.88 = 607.88/x
  3. Step 3: Cross multiply
    400.25x = 607.88 × 607.88
  4. Step 4: Simplify right side
    400.25x = 369,512.02
  5. Step 5: Solve for x
    x = 369,512.02/400.25
  6. Step 6: Final answer
    x = 923.20

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.