Home / 1,149.05-1,724.25-455.79

Finding the Fourth Proportional to 1,149.05, 1,724.25 and 455.79

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Solution

The fourth proportional to 1,149.05, 1,724.25 and 455.79 is: 683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.05 : 1,724.25 = 455.79 : x
  2. Step 2: Convert to fraction form
    1,149.05/1,724.25 = 455.79/x
  3. Step 3: Cross multiply
    1,149.05x = 1,724.25 × 455.79
  4. Step 4: Simplify right side
    1,149.05x = 785,895.91
  5. Step 5: Solve for x
    x = 785,895.91/1,149.05
  6. Step 6: Final answer
    x = 683.95

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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.