Home / 1,149.10-1,723.98-418.48

Finding the Fourth Proportional to 1,149.10, 1,723.98 and 418.48

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Solution

The fourth proportional to 1,149.10, 1,723.98 and 418.48 is: 627.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.10 : 1,723.98 = 418.48 : x
  2. Step 2: Convert to fraction form
    1,149.10/1,723.98 = 418.48/x
  3. Step 3: Cross multiply
    1,149.10x = 1,723.98 × 418.48
  4. Step 4: Simplify right side
    1,149.10x = 721,451.15
  5. Step 5: Solve for x
    x = 721,451.15/1,149.10
  6. Step 6: Final answer
    x = 627.84

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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.