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Finding the Fourth Proportional to 1,042.92, 1,439.10 and 600.75

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Solution

The fourth proportional to 1,042.92, 1,439.10 and 600.75 is: 828.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.92 : 1,439.10 = 600.75 : x
  2. Step 2: Convert to fraction form
    1,042.92/1,439.10 = 600.75/x
  3. Step 3: Cross multiply
    1,042.92x = 1,439.10 × 600.75
  4. Step 4: Simplify right side
    1,042.92x = 864,539.33
  5. Step 5: Solve for x
    x = 864,539.33/1,042.92
  6. Step 6: Final answer
    x = 828.96

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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.