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Finding the Fourth Proportional to 798.94, 1,192.91 and 677.26

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Solution

The fourth proportional to 798.94, 1,192.91 and 677.26 is: 1,011.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.94 : 1,192.91 = 677.26 : x
  2. Step 2: Convert to fraction form
    798.94/1,192.91 = 677.26/x
  3. Step 3: Cross multiply
    798.94x = 1,192.91 × 677.26
  4. Step 4: Simplify right side
    798.94x = 807,910.23
  5. Step 5: Solve for x
    x = 807,910.23/798.94
  6. Step 6: Final answer
    x = 1,011.23

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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.