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Finding the Fourth Proportional to 1,992.93, 2,989.39 and 532.23

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Solution

The fourth proportional to 1,992.93, 2,989.39 and 532.23 is: 798.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.93 : 2,989.39 = 532.23 : x
  2. Step 2: Convert to fraction form
    1,992.93/2,989.39 = 532.23/x
  3. Step 3: Cross multiply
    1,992.93x = 2,989.39 × 532.23
  4. Step 4: Simplify right side
    1,992.93x = 1,591,043.04
  5. Step 5: Solve for x
    x = 1,591,043.04/1,992.93
  6. Step 6: Final answer
    x = 798.34

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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.