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Finding the Fourth Proportional to 757.56, 1,136.52 and 697.56

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Solution

The fourth proportional to 757.56, 1,136.52 and 697.56 is: 1,046.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.56 : 1,136.52 = 697.56 : x
  2. Step 2: Convert to fraction form
    757.56/1,136.52 = 697.56/x
  3. Step 3: Cross multiply
    757.56x = 1,136.52 × 697.56
  4. Step 4: Simplify right side
    757.56x = 792,790.89
  5. Step 5: Solve for x
    x = 792,790.89/757.56
  6. Step 6: Final answer
    x = 1,046.51

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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.