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Finding the Fourth Proportional to 1,441.83, 2,163.42 and 518.16

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Solution

The fourth proportional to 1,441.83, 2,163.42 and 518.16 is: 777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.83 : 2,163.42 = 518.16 : x
  2. Step 2: Convert to fraction form
    1,441.83/2,163.42 = 518.16/x
  3. Step 3: Cross multiply
    1,441.83x = 2,163.42 × 518.16
  4. Step 4: Simplify right side
    1,441.83x = 1,120,997.71
  5. Step 5: Solve for x
    x = 1,120,997.71/1,441.83
  6. Step 6: Final answer
    x = 777.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.