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Finding the Fourth Proportional to 796.43, 1,188.57 and 786.11

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Solution

The fourth proportional to 796.43, 1,188.57 and 786.11 is: 1,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.43 : 1,188.57 = 786.11 : x
  2. Step 2: Convert to fraction form
    796.43/1,188.57 = 786.11/x
  3. Step 3: Cross multiply
    796.43x = 1,188.57 × 786.11
  4. Step 4: Simplify right side
    796.43x = 934,343.77
  5. Step 5: Solve for x
    x = 934,343.77/796.43
  6. Step 6: Final answer
    x = 1,173.16

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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.