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Finding the Third Proportional to 533.25 and 823.88

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Solution

The third proportional to 533.25 and 823.88 is: 1,272.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.25 : 823.88 = 823.88 : x
  2. Step 2: Convert to fraction form
    533.25/823.88 = 823.88/x
  3. Step 3: Cross multiply
    533.25x = 823.88 × 823.88
  4. Step 4: Simplify right side
    533.25x = 678,770.02
  5. Step 5: Solve for x
    x = 678,770.02/533.25
  6. Step 6: Final answer
    x = 1,272.89

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.