Home / 1,144.27-1,579.09-620.30

Finding the Fourth Proportional to 1,144.27, 1,579.09 and 620.30

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Solution

The fourth proportional to 1,144.27, 1,579.09 and 620.30 is: 856.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.27 : 1,579.09 = 620.30 : x
  2. Step 2: Convert to fraction form
    1,144.27/1,579.09 = 620.30/x
  3. Step 3: Cross multiply
    1,144.27x = 1,579.09 × 620.30
  4. Step 4: Simplify right side
    1,144.27x = 979,513.09
  5. Step 5: Solve for x
    x = 979,513.09/1,144.27
  6. Step 6: Final answer
    x = 856.01

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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.