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Finding the Fourth Proportional to 539.11, 744.09 and 342.58

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Solution

The fourth proportional to 539.11, 744.09 and 342.58 is: 472.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.11 : 744.09 = 342.58 : x
  2. Step 2: Convert to fraction form
    539.11/744.09 = 342.58/x
  3. Step 3: Cross multiply
    539.11x = 744.09 × 342.58
  4. Step 4: Simplify right side
    539.11x = 254,910.35
  5. Step 5: Solve for x
    x = 254,910.35/539.11
  6. Step 6: Final answer
    x = 472.84

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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.