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Finding the Fourth Proportional to 824.68, 1,235.56 and 662

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Solution

The fourth proportional to 824.68, 1,235.56 and 662 is: 991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.68 : 1,235.56 = 662 : x
  2. Step 2: Convert to fraction form
    824.68/1,235.56 = 662/x
  3. Step 3: Cross multiply
    824.68x = 1,235.56 × 662
  4. Step 4: Simplify right side
    824.68x = 817,940.72
  5. Step 5: Solve for x
    x = 817,940.72/824.68
  6. Step 6: Final answer
    x = 991.83

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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.