Home / 1,144.83-1,579.87-620.86

Finding the Fourth Proportional to 1,144.83, 1,579.87 and 620.86

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Solution

The fourth proportional to 1,144.83, 1,579.87 and 620.86 is: 856.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.83 : 1,579.87 = 620.86 : x
  2. Step 2: Convert to fraction form
    1,144.83/1,579.87 = 620.86/x
  3. Step 3: Cross multiply
    1,144.83x = 1,579.87 × 620.86
  4. Step 4: Simplify right side
    1,144.83x = 980,878.09
  5. Step 5: Solve for x
    x = 980,878.09/1,144.83
  6. Step 6: Final answer
    x = 856.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.