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Finding the Fourth Proportional to 493.03, 739.68 and 439.30

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Solution

The fourth proportional to 493.03, 739.68 and 439.30 is: 659.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.03 : 739.68 = 439.30 : x
  2. Step 2: Convert to fraction form
    493.03/739.68 = 439.30/x
  3. Step 3: Cross multiply
    493.03x = 739.68 × 439.30
  4. Step 4: Simplify right side
    493.03x = 324,941.42
  5. Step 5: Solve for x
    x = 324,941.42/493.03
  6. Step 6: Final answer
    x = 659.07

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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.