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Finding the Fourth Proportional to 2,253.60, 3,380.81 and 792.36

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Solution

The fourth proportional to 2,253.60, 3,380.81 and 792.36 is: 1,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.60 : 3,380.81 = 792.36 : x
  2. Step 2: Convert to fraction form
    2,253.60/3,380.81 = 792.36/x
  3. Step 3: Cross multiply
    2,253.60x = 3,380.81 × 792.36
  4. Step 4: Simplify right side
    2,253.60x = 2,678,814.65
  5. Step 5: Solve for x
    x = 2,678,814.65/2,253.60
  6. Step 6: Final answer
    x = 1,188.68

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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.