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Finding the Fourth Proportional to 827.04, 1,239.74 and 534.48

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Solution

The fourth proportional to 827.04, 1,239.74 and 534.48 is: 801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.04 : 1,239.74 = 534.48 : x
  2. Step 2: Convert to fraction form
    827.04/1,239.74 = 534.48/x
  3. Step 3: Cross multiply
    827.04x = 1,239.74 × 534.48
  4. Step 4: Simplify right side
    827.04x = 662,616.24
  5. Step 5: Solve for x
    x = 662,616.24/827.04
  6. Step 6: Final answer
    x = 801.19

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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.