Home / 1,144.60-1,579.56-620.63

Finding the Fourth Proportional to 1,144.60, 1,579.56 and 620.63

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Solution

The fourth proportional to 1,144.60, 1,579.56 and 620.63 is: 856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.60 : 1,579.56 = 620.63 : x
  2. Step 2: Convert to fraction form
    1,144.60/1,579.56 = 620.63/x
  3. Step 3: Cross multiply
    1,144.60x = 1,579.56 × 620.63
  4. Step 4: Simplify right side
    1,144.60x = 980,322.32
  5. Step 5: Solve for x
    x = 980,322.32/1,144.60
  6. Step 6: Final answer
    x = 856.48

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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.