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Finding the Fourth Proportional to 828.15, 1,142.96 and 534.27

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Solution

The fourth proportional to 828.15, 1,142.96 and 534.27 is: 737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.15 : 1,142.96 = 534.27 : x
  2. Step 2: Convert to fraction form
    828.15/1,142.96 = 534.27/x
  3. Step 3: Cross multiply
    828.15x = 1,142.96 × 534.27
  4. Step 4: Simplify right side
    828.15x = 610,649.43
  5. Step 5: Solve for x
    x = 610,649.43/828.15
  6. Step 6: Final answer
    x = 737.37

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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.