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Finding the Fourth Proportional to 835.32, 1,152.12 and 540.36

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Solution

The fourth proportional to 835.32, 1,152.12 and 540.36 is: 745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.32 : 1,152.12 = 540.36 : x
  2. Step 2: Convert to fraction form
    835.32/1,152.12 = 540.36/x
  3. Step 3: Cross multiply
    835.32x = 1,152.12 × 540.36
  4. Step 4: Simplify right side
    835.32x = 622,559.56
  5. Step 5: Solve for x
    x = 622,559.56/835.32
  6. Step 6: Final answer
    x = 745.29

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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.