Home / 1,144.53-1,579.41-620.55

Finding the Fourth Proportional to 1,144.53, 1,579.41 and 620.55

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Solution

The fourth proportional to 1,144.53, 1,579.41 and 620.55 is: 856.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.53 : 1,579.41 = 620.55 : x
  2. Step 2: Convert to fraction form
    1,144.53/1,579.41 = 620.55/x
  3. Step 3: Cross multiply
    1,144.53x = 1,579.41 × 620.55
  4. Step 4: Simplify right side
    1,144.53x = 980,102.88
  5. Step 5: Solve for x
    x = 980,102.88/1,144.53
  6. Step 6: Final answer
    x = 856.34

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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.