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Finding the Fourth Proportional to 350.97, 483.11 and 309.63

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Solution

The fourth proportional to 350.97, 483.11 and 309.63 is: 426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.97 : 483.11 = 309.63 : x
  2. Step 2: Convert to fraction form
    350.97/483.11 = 309.63/x
  3. Step 3: Cross multiply
    350.97x = 483.11 × 309.63
  4. Step 4: Simplify right side
    350.97x = 149,583.80
  5. Step 5: Solve for x
    x = 149,583.80/350.97
  6. Step 6: Final answer
    x = 426.20

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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.