Home / 1,414.68-2,122.20-440.79

Finding the Fourth Proportional to 1,414.68, 2,122.20 and 440.79

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Solution

The fourth proportional to 1,414.68, 2,122.20 and 440.79 is: 661.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.68 : 2,122.20 = 440.79 : x
  2. Step 2: Convert to fraction form
    1,414.68/2,122.20 = 440.79/x
  3. Step 3: Cross multiply
    1,414.68x = 2,122.20 × 440.79
  4. Step 4: Simplify right side
    1,414.68x = 935,444.54
  5. Step 5: Solve for x
    x = 935,444.54/1,414.68
  6. Step 6: Final answer
    x = 661.24

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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.