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Finding the Fourth Proportional to 814.42, 1,222.74 and 704.56

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Solution

The fourth proportional to 814.42, 1,222.74 and 704.56 is: 1,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.42 : 1,222.74 = 704.56 : x
  2. Step 2: Convert to fraction form
    814.42/1,222.74 = 704.56/x
  3. Step 3: Cross multiply
    814.42x = 1,222.74 × 704.56
  4. Step 4: Simplify right side
    814.42x = 861,493.69
  5. Step 5: Solve for x
    x = 861,493.69/814.42
  6. Step 6: Final answer
    x = 1,057.80

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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.