Home / 1,144.31-1,579.13-620.33

Finding the Fourth Proportional to 1,144.31, 1,579.13 and 620.33

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Solution

The fourth proportional to 1,144.31, 1,579.13 and 620.33 is: 856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.31 : 1,579.13 = 620.33 : x
  2. Step 2: Convert to fraction form
    1,144.31/1,579.13 = 620.33/x
  3. Step 3: Cross multiply
    1,144.31x = 1,579.13 × 620.33
  4. Step 4: Simplify right side
    1,144.31x = 979,587.21
  5. Step 5: Solve for x
    x = 979,587.21/1,144.31
  6. Step 6: Final answer
    x = 856.05

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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.