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Finding the Fourth Proportional to 797.80, 1,103.88 and 694.52

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Solution

The fourth proportional to 797.80, 1,103.88 and 694.52 is: 960.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.80 : 1,103.88 = 694.52 : x
  2. Step 2: Convert to fraction form
    797.80/1,103.88 = 694.52/x
  3. Step 3: Cross multiply
    797.80x = 1,103.88 × 694.52
  4. Step 4: Simplify right side
    797.80x = 766,666.74
  5. Step 5: Solve for x
    x = 766,666.74/797.80
  6. Step 6: Final answer
    x = 960.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.