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Finding the Fourth Proportional to 663.32, 995.01 and 252.47

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Solution

The fourth proportional to 663.32, 995.01 and 252.47 is: 378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.32 : 995.01 = 252.47 : x
  2. Step 2: Convert to fraction form
    663.32/995.01 = 252.47/x
  3. Step 3: Cross multiply
    663.32x = 995.01 × 252.47
  4. Step 4: Simplify right side
    663.32x = 251,205.20
  5. Step 5: Solve for x
    x = 251,205.20/663.32
  6. Step 6: Final answer
    x = 378.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.