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Finding the Fourth Proportional to 797.40, 1,194.66 and 310.14

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Solution

The fourth proportional to 797.40, 1,194.66 and 310.14 is: 464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.40 : 1,194.66 = 310.14 : x
  2. Step 2: Convert to fraction form
    797.40/1,194.66 = 310.14/x
  3. Step 3: Cross multiply
    797.40x = 1,194.66 × 310.14
  4. Step 4: Simplify right side
    797.40x = 370,511.85
  5. Step 5: Solve for x
    x = 370,511.85/797.40
  6. Step 6: Final answer
    x = 464.65

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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.