Home / 1,144.25-1,579.07-620.28

Finding the Fourth Proportional to 1,144.25, 1,579.07 and 620.28

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Solution

The fourth proportional to 1,144.25, 1,579.07 and 620.28 is: 855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.25 : 1,579.07 = 620.28 : x
  2. Step 2: Convert to fraction form
    1,144.25/1,579.07 = 620.28/x
  3. Step 3: Cross multiply
    1,144.25x = 1,579.07 × 620.28
  4. Step 4: Simplify right side
    1,144.25x = 979,462.44
  5. Step 5: Solve for x
    x = 979,462.44/1,144.25
  6. Step 6: Final answer
    x = 855.98

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1.5x scale

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.