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Finding the Fourth Proportional to 539.73, 744.86 and 343.19

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Solution

The fourth proportional to 539.73, 744.86 and 343.19 is: 473.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.73 : 744.86 = 343.19 : x
  2. Step 2: Convert to fraction form
    539.73/744.86 = 343.19/x
  3. Step 3: Cross multiply
    539.73x = 744.86 × 343.19
  4. Step 4: Simplify right side
    539.73x = 255,631.22
  5. Step 5: Solve for x
    x = 255,631.22/539.73
  6. Step 6: Final answer
    x = 473.63

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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.