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Finding the Fourth Proportional to 539.44, 744.37 and 318.37

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Solution

The fourth proportional to 539.44, 744.37 and 318.37 is: 439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.44 : 744.37 = 318.37 : x
  2. Step 2: Convert to fraction form
    539.44/744.37 = 318.37/x
  3. Step 3: Cross multiply
    539.44x = 744.37 × 318.37
  4. Step 4: Simplify right side
    539.44x = 236,979.76
  5. Step 5: Solve for x
    x = 236,979.76/539.44
  6. Step 6: Final answer
    x = 439.31

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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.