Home / 1,414.41-2,121.85-440.31

Finding the Fourth Proportional to 1,414.41, 2,121.85 and 440.31

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Solution

The fourth proportional to 1,414.41, 2,121.85 and 440.31 is: 660.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.41 : 2,121.85 = 440.31 : x
  2. Step 2: Convert to fraction form
    1,414.41/2,121.85 = 440.31/x
  3. Step 3: Cross multiply
    1,414.41x = 2,121.85 × 440.31
  4. Step 4: Simplify right side
    1,414.41x = 934,280.28
  5. Step 5: Solve for x
    x = 934,280.28/1,414.41
  6. Step 6: Final answer
    x = 660.55

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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.