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Finding the Fourth Proportional to 835.11, 1,151.67 and 539.87

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Solution

The fourth proportional to 835.11, 1,151.67 and 539.87 is: 744.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.11 : 1,151.67 = 539.87 : x
  2. Step 2: Convert to fraction form
    835.11/1,151.67 = 539.87/x
  3. Step 3: Cross multiply
    835.11x = 1,151.67 × 539.87
  4. Step 4: Simplify right side
    835.11x = 621,745.31
  5. Step 5: Solve for x
    x = 621,745.31/835.11
  6. Step 6: Final answer
    x = 744.51

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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.