Home / 1,414.06-2,121.36-439.96

Finding the Fourth Proportional to 1,414.06, 2,121.36 and 439.96

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Solution

The fourth proportional to 1,414.06, 2,121.36 and 439.96 is: 660.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.06 : 2,121.36 = 439.96 : x
  2. Step 2: Convert to fraction form
    1,414.06/2,121.36 = 439.96/x
  3. Step 3: Cross multiply
    1,414.06x = 2,121.36 × 439.96
  4. Step 4: Simplify right side
    1,414.06x = 933,313.55
  5. Step 5: Solve for x
    x = 933,313.55/1,414.06
  6. Step 6: Final answer
    x = 660.02

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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.