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Finding the Fourth Proportional to 541.39, 806.55 and 515.27

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Solution

The fourth proportional to 541.39, 806.55 and 515.27 is: 767.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.39 : 806.55 = 515.27 : x
  2. Step 2: Convert to fraction form
    541.39/806.55 = 515.27/x
  3. Step 3: Cross multiply
    541.39x = 806.55 × 515.27
  4. Step 4: Simplify right side
    541.39x = 415,591.02
  5. Step 5: Solve for x
    x = 415,591.02/541.39
  6. Step 6: Final answer
    x = 767.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.