Home / 1,414.18-2,121.16-440.25

Finding the Fourth Proportional to 1,414.18, 2,121.16 and 440.25

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Solution

The fourth proportional to 1,414.18, 2,121.16 and 440.25 is: 660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.18 : 2,121.16 = 440.25 : x
  2. Step 2: Convert to fraction form
    1,414.18/2,121.16 = 440.25/x
  3. Step 3: Cross multiply
    1,414.18x = 2,121.16 × 440.25
  4. Step 4: Simplify right side
    1,414.18x = 933,845.63
  5. Step 5: Solve for x
    x = 933,845.63/1,414.18
  6. Step 6: Final answer
    x = 660.35

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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.