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Finding the Fourth Proportional to 1,163.24, 1,744.94 and 578.39

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Solution

The fourth proportional to 1,163.24, 1,744.94 and 578.39 is: 867.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.24 : 1,744.94 = 578.39 : x
  2. Step 2: Convert to fraction form
    1,163.24/1,744.94 = 578.39/x
  3. Step 3: Cross multiply
    1,163.24x = 1,744.94 × 578.39
  4. Step 4: Simplify right side
    1,163.24x = 1,009,248.57
  5. Step 5: Solve for x
    x = 1,009,248.57/1,163.24
  6. Step 6: Final answer
    x = 867.62

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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.