Home / 1,144.85-1,579.90-620.88

Finding the Fourth Proportional to 1,144.85, 1,579.90 and 620.88

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Solution

The fourth proportional to 1,144.85, 1,579.90 and 620.88 is: 856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.85 : 1,579.90 = 620.88 : x
  2. Step 2: Convert to fraction form
    1,144.85/1,579.90 = 620.88/x
  3. Step 3: Cross multiply
    1,144.85x = 1,579.90 × 620.88
  4. Step 4: Simplify right side
    1,144.85x = 980,928.31
  5. Step 5: Solve for x
    x = 980,928.31/1,144.85
  6. Step 6: Final answer
    x = 856.82

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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.