Home / 1,144.31-1,579.16-620.36

Finding the Fourth Proportional to 1,144.31, 1,579.16 and 620.36

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Solution

The fourth proportional to 1,144.31, 1,579.16 and 620.36 is: 856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.31 : 1,579.16 = 620.36 : x
  2. Step 2: Convert to fraction form
    1,144.31/1,579.16 = 620.36/x
  3. Step 3: Cross multiply
    1,144.31x = 1,579.16 × 620.36
  4. Step 4: Simplify right side
    1,144.31x = 979,647.70
  5. Step 5: Solve for x
    x = 979,647.70/1,144.31
  6. Step 6: Final answer
    x = 856.10

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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.