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Finding the Fourth Proportional to 494.32, 739.32 and 443.56

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Solution

The fourth proportional to 494.32, 739.32 and 443.56 is: 663.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.32 : 739.32 = 443.56 : x
  2. Step 2: Convert to fraction form
    494.32/739.32 = 443.56/x
  3. Step 3: Cross multiply
    494.32x = 739.32 × 443.56
  4. Step 4: Simplify right side
    494.32x = 327,932.78
  5. Step 5: Solve for x
    x = 327,932.78/494.32
  6. Step 6: Final answer
    x = 663.40

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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.