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Finding the Fourth Proportional to 835.11, 1,252.56 and 218.88

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Solution

The fourth proportional to 835.11, 1,252.56 and 218.88 is: 328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.11 : 1,252.56 = 218.88 : x
  2. Step 2: Convert to fraction form
    835.11/1,252.56 = 218.88/x
  3. Step 3: Cross multiply
    835.11x = 1,252.56 × 218.88
  4. Step 4: Simplify right side
    835.11x = 274,161.15
  5. Step 5: Solve for x
    x = 274,161.15/835.11
  6. Step 6: Final answer
    x = 328.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.