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Finding the Fourth Proportional to 539.09, 743.95 and 303.09

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Solution

The fourth proportional to 539.09, 743.95 and 303.09 is: 418.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.09 : 743.95 = 303.09 : x
  2. Step 2: Convert to fraction form
    539.09/743.95 = 303.09/x
  3. Step 3: Cross multiply
    539.09x = 743.95 × 303.09
  4. Step 4: Simplify right side
    539.09x = 225,480.26
  5. Step 5: Solve for x
    x = 225,480.26/539.09
  6. Step 6: Final answer
    x = 418.26

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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.