Home / 1,414.45-2,121.07-440.63

Finding the Fourth Proportional to 1,414.45, 2,121.07 and 440.63

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Solution

The fourth proportional to 1,414.45, 2,121.07 and 440.63 is: 660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.45 : 2,121.07 = 440.63 : x
  2. Step 2: Convert to fraction form
    1,414.45/2,121.07 = 440.63/x
  3. Step 3: Cross multiply
    1,414.45x = 2,121.07 × 440.63
  4. Step 4: Simplify right side
    1,414.45x = 934,600.67
  5. Step 5: Solve for x
    x = 934,600.67/1,414.45
  6. Step 6: Final answer
    x = 660.75

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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.