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Finding the Fourth Proportional to 807.98, 1,203.36 and 779.27

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Solution

The fourth proportional to 807.98, 1,203.36 and 779.27 is: 1,160.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.98 : 1,203.36 = 779.27 : x
  2. Step 2: Convert to fraction form
    807.98/1,203.36 = 779.27/x
  3. Step 3: Cross multiply
    807.98x = 1,203.36 × 779.27
  4. Step 4: Simplify right side
    807.98x = 937,740.18
  5. Step 5: Solve for x
    x = 937,740.18/807.98
  6. Step 6: Final answer
    x = 1,160.61

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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.