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Finding the Fourth Proportional to 662.82, 994.40 and 252.30

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Solution

The fourth proportional to 662.82, 994.40 and 252.30 is: 378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.82 : 994.40 = 252.30 : x
  2. Step 2: Convert to fraction form
    662.82/994.40 = 252.30/x
  3. Step 3: Cross multiply
    662.82x = 994.40 × 252.30
  4. Step 4: Simplify right side
    662.82x = 250,885.86
  5. Step 5: Solve for x
    x = 250,885.86/662.82
  6. Step 6: Final answer
    x = 378.51

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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.