Home / 1,149.28-1,723.46-418.45

Finding the Fourth Proportional to 1,149.28, 1,723.46 and 418.45

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Solution

The fourth proportional to 1,149.28, 1,723.46 and 418.45 is: 627.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.28 : 1,723.46 = 418.45 : x
  2. Step 2: Convert to fraction form
    1,149.28/1,723.46 = 418.45/x
  3. Step 3: Cross multiply
    1,149.28x = 1,723.46 × 418.45
  4. Step 4: Simplify right side
    1,149.28x = 721,181.84
  5. Step 5: Solve for x
    x = 721,181.84/1,149.28
  6. Step 6: Final answer
    x = 627.51

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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.