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Finding the Fourth Proportional to 966.48, 1,449.31 and 704.85

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Solution

The fourth proportional to 966.48, 1,449.31 and 704.85 is: 1,056.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.48 : 1,449.31 = 704.85 : x
  2. Step 2: Convert to fraction form
    966.48/1,449.31 = 704.85/x
  3. Step 3: Cross multiply
    966.48x = 1,449.31 × 704.85
  4. Step 4: Simplify right side
    966.48x = 1,021,546.15
  5. Step 5: Solve for x
    x = 1,021,546.15/966.48
  6. Step 6: Final answer
    x = 1,056.98

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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.