Home / 1,414.30-2,121.43-440.47

Finding the Fourth Proportional to 1,414.30, 2,121.43 and 440.47

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Solution

The fourth proportional to 1,414.30, 2,121.43 and 440.47 is: 660.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.30 : 2,121.43 = 440.47 : x
  2. Step 2: Convert to fraction form
    1,414.30/2,121.43 = 440.47/x
  3. Step 3: Cross multiply
    1,414.30x = 2,121.43 × 440.47
  4. Step 4: Simplify right side
    1,414.30x = 934,426.27
  5. Step 5: Solve for x
    x = 934,426.27/1,414.30
  6. Step 6: Final answer
    x = 660.70

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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.