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Finding the Fourth Proportional to 539.44, 743.51 and 445.88

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Solution

The fourth proportional to 539.44, 743.51 and 445.88 is: 614.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.44 : 743.51 = 445.88 : x
  2. Step 2: Convert to fraction form
    539.44/743.51 = 445.88/x
  3. Step 3: Cross multiply
    539.44x = 743.51 × 445.88
  4. Step 4: Simplify right side
    539.44x = 331,519.21
  5. Step 5: Solve for x
    x = 331,519.21/539.44
  6. Step 6: Final answer
    x = 614.56

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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.