Home / 1,090.27-1,635.39-268.55

Finding the Fourth Proportional to 1,090.27, 1,635.39 and 268.55

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Solution

The fourth proportional to 1,090.27, 1,635.39 and 268.55 is: 402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.27 : 1,635.39 = 268.55 : x
  2. Step 2: Convert to fraction form
    1,090.27/1,635.39 = 268.55/x
  3. Step 3: Cross multiply
    1,090.27x = 1,635.39 × 268.55
  4. Step 4: Simplify right side
    1,090.27x = 439,183.98
  5. Step 5: Solve for x
    x = 439,183.98/1,090.27
  6. Step 6: Final answer
    x = 402.82

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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.