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Finding the Fourth Proportional to 797.69, 1,194.58 and 406.30

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Solution

The fourth proportional to 797.69, 1,194.58 and 406.30 is: 608.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.69 : 1,194.58 = 406.30 : x
  2. Step 2: Convert to fraction form
    797.69/1,194.58 = 406.30/x
  3. Step 3: Cross multiply
    797.69x = 1,194.58 × 406.30
  4. Step 4: Simplify right side
    797.69x = 485,357.85
  5. Step 5: Solve for x
    x = 485,357.85/797.69
  6. Step 6: Final answer
    x = 608.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.