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Finding the Fourth Proportional to 796.68, 1,188.30 and 772.38

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Solution

The fourth proportional to 796.68, 1,188.30 and 772.38 is: 1,152.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.68 : 1,188.30 = 772.38 : x
  2. Step 2: Convert to fraction form
    796.68/1,188.30 = 772.38/x
  3. Step 3: Cross multiply
    796.68x = 1,188.30 × 772.38
  4. Step 4: Simplify right side
    796.68x = 917,819.15
  5. Step 5: Solve for x
    x = 917,819.15/796.68
  6. Step 6: Final answer
    x = 1,152.05

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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.