Home / 1,144.51-1,579.43-620.54

Finding the Fourth Proportional to 1,144.51, 1,579.43 and 620.54

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Solution

The fourth proportional to 1,144.51, 1,579.43 and 620.54 is: 856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.51 : 1,579.43 = 620.54 : x
  2. Step 2: Convert to fraction form
    1,144.51/1,579.43 = 620.54/x
  3. Step 3: Cross multiply
    1,144.51x = 1,579.43 × 620.54
  4. Step 4: Simplify right side
    1,144.51x = 980,106.21
  5. Step 5: Solve for x
    x = 980,106.21/1,144.51
  6. Step 6: Final answer
    x = 856.35

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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.