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Finding the Fourth Proportional to 789.62, 1,184.13 and 262.43

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Solution

The fourth proportional to 789.62, 1,184.13 and 262.43 is: 393.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.62 : 1,184.13 = 262.43 : x
  2. Step 2: Convert to fraction form
    789.62/1,184.13 = 262.43/x
  3. Step 3: Cross multiply
    789.62x = 1,184.13 × 262.43
  4. Step 4: Simplify right side
    789.62x = 310,748.77
  5. Step 5: Solve for x
    x = 310,748.77/789.62
  6. Step 6: Final answer
    x = 393.54

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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.