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Finding the Fourth Proportional to 822.14, 1,238.76 and 733.72

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Solution

The fourth proportional to 822.14, 1,238.76 and 733.72 is: 1,105.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.14 : 1,238.76 = 733.72 : x
  2. Step 2: Convert to fraction form
    822.14/1,238.76 = 733.72/x
  3. Step 3: Cross multiply
    822.14x = 1,238.76 × 733.72
  4. Step 4: Simplify right side
    822.14x = 908,902.99
  5. Step 5: Solve for x
    x = 908,902.99/822.14
  6. Step 6: Final answer
    x = 1,105.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.