Home / 1,149.18-1,723.98-418.86

Finding the Fourth Proportional to 1,149.18, 1,723.98 and 418.86

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Solution

The fourth proportional to 1,149.18, 1,723.98 and 418.86 is: 628.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.18 : 1,723.98 = 418.86 : x
  2. Step 2: Convert to fraction form
    1,149.18/1,723.98 = 418.86/x
  3. Step 3: Cross multiply
    1,149.18x = 1,723.98 × 418.86
  4. Step 4: Simplify right side
    1,149.18x = 722,106.26
  5. Step 5: Solve for x
    x = 722,106.26/1,149.18
  6. Step 6: Final answer
    x = 628.37

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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.