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Finding the Fourth Proportional to 539.44, 744.44 and 303.40

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Solution

The fourth proportional to 539.44, 744.44 and 303.40 is: 418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.44 : 744.44 = 303.40 : x
  2. Step 2: Convert to fraction form
    539.44/744.44 = 303.40/x
  3. Step 3: Cross multiply
    539.44x = 744.44 × 303.40
  4. Step 4: Simplify right side
    539.44x = 225,863.10
  5. Step 5: Solve for x
    x = 225,863.10/539.44
  6. Step 6: Final answer
    x = 418.70

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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.