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Finding the Fourth Proportional to 539.51, 744.46 and 303.43

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Solution

The fourth proportional to 539.51, 744.46 and 303.43 is: 418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.51 : 744.46 = 303.43 : x
  2. Step 2: Convert to fraction form
    539.51/744.46 = 303.43/x
  3. Step 3: Cross multiply
    539.51x = 744.46 × 303.43
  4. Step 4: Simplify right side
    539.51x = 225,891.50
  5. Step 5: Solve for x
    x = 225,891.50/539.51
  6. Step 6: Final answer
    x = 418.70

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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.