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Finding the Fourth Proportional to 539.87, 744.89 and 303.83

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Solution

The fourth proportional to 539.87, 744.89 and 303.83 is: 419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.87 : 744.89 = 303.83 : x
  2. Step 2: Convert to fraction form
    539.87/744.89 = 303.83/x
  3. Step 3: Cross multiply
    539.87x = 744.89 × 303.83
  4. Step 4: Simplify right side
    539.87x = 226,317.48
  5. Step 5: Solve for x
    x = 226,317.48/539.87
  6. Step 6: Final answer
    x = 419.21

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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.