Home / 1,144.55-1,579.48-620.58

Finding the Fourth Proportional to 1,144.55, 1,579.48 and 620.58

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Solution

The fourth proportional to 1,144.55, 1,579.48 and 620.58 is: 856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.55 : 1,579.48 = 620.58 : x
  2. Step 2: Convert to fraction form
    1,144.55/1,579.48 = 620.58/x
  3. Step 3: Cross multiply
    1,144.55x = 1,579.48 × 620.58
  4. Step 4: Simplify right side
    1,144.55x = 980,192.68
  5. Step 5: Solve for x
    x = 980,192.68/1,144.55
  6. Step 6: Final answer
    x = 856.40

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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.