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Finding the Fourth Proportional to 796.12, 1,188.88 and 787.54

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Solution

The fourth proportional to 796.12, 1,188.88 and 787.54 is: 1,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.12 : 1,188.88 = 787.54 : x
  2. Step 2: Convert to fraction form
    796.12/1,188.88 = 787.54/x
  3. Step 3: Cross multiply
    796.12x = 1,188.88 × 787.54
  4. Step 4: Simplify right side
    796.12x = 936,290.56
  5. Step 5: Solve for x
    x = 936,290.56/796.12
  6. Step 6: Final answer
    x = 1,176.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.