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Finding the Fourth Proportional to 789.54, 1,184.85 and 756.06

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Solution

The fourth proportional to 789.54, 1,184.85 and 756.06 is: 1,134.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.54 : 1,184.85 = 756.06 : x
  2. Step 2: Convert to fraction form
    789.54/1,184.85 = 756.06/x
  3. Step 3: Cross multiply
    789.54x = 1,184.85 × 756.06
  4. Step 4: Simplify right side
    789.54x = 895,817.69
  5. Step 5: Solve for x
    x = 895,817.69/789.54
  6. Step 6: Final answer
    x = 1,134.61

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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.