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Finding the Fourth Proportional to 539.85, 744.55 and 343.02

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Solution

The fourth proportional to 539.85, 744.55 and 343.02 is: 473.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.85 : 744.55 = 343.02 : x
  2. Step 2: Convert to fraction form
    539.85/744.55 = 343.02/x
  3. Step 3: Cross multiply
    539.85x = 744.55 × 343.02
  4. Step 4: Simplify right side
    539.85x = 255,395.54
  5. Step 5: Solve for x
    x = 255,395.54/539.85
  6. Step 6: Final answer
    x = 473.09

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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.