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Finding the Fourth Proportional to 827.53, 1,240.48 and 534.99

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Solution

The fourth proportional to 827.53, 1,240.48 and 534.99 is: 801.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.53 : 1,240.48 = 534.99 : x
  2. Step 2: Convert to fraction form
    827.53/1,240.48 = 534.99/x
  3. Step 3: Cross multiply
    827.53x = 1,240.48 × 534.99
  4. Step 4: Simplify right side
    827.53x = 663,644.40
  5. Step 5: Solve for x
    x = 663,644.40/827.53
  6. Step 6: Final answer
    x = 801.96

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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.