Home / 1,149.13-1,724.61-418.93

Finding the Fourth Proportional to 1,149.13, 1,724.61 and 418.93

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Solution

The fourth proportional to 1,149.13, 1,724.61 and 418.93 is: 628.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.13 : 1,724.61 = 418.93 : x
  2. Step 2: Convert to fraction form
    1,149.13/1,724.61 = 418.93/x
  3. Step 3: Cross multiply
    1,149.13x = 1,724.61 × 418.93
  4. Step 4: Simplify right side
    1,149.13x = 722,490.87
  5. Step 5: Solve for x
    x = 722,490.87/1,149.13
  6. Step 6: Final answer
    x = 628.73

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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.