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Finding the Fourth Proportional to 539.43, 744.41 and 303.38

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Solution

The fourth proportional to 539.43, 744.41 and 303.38 is: 418.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.43 : 744.41 = 303.38 : x
  2. Step 2: Convert to fraction form
    539.43/744.41 = 303.38/x
  3. Step 3: Cross multiply
    539.43x = 744.41 × 303.38
  4. Step 4: Simplify right side
    539.43x = 225,833.87
  5. Step 5: Solve for x
    x = 225,833.87/539.43
  6. Step 6: Final answer
    x = 418.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.