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Finding the Fourth Proportional to 789.63, 1,182.88 and 744.67

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Solution

The fourth proportional to 789.63, 1,182.88 and 744.67 is: 1,115.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.63 : 1,182.88 = 744.67 : x
  2. Step 2: Convert to fraction form
    789.63/1,182.88 = 744.67/x
  3. Step 3: Cross multiply
    789.63x = 1,182.88 × 744.67
  4. Step 4: Simplify right side
    789.63x = 880,855.25
  5. Step 5: Solve for x
    x = 880,855.25/789.63
  6. Step 6: Final answer
    x = 1,115.53

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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.