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Finding the Fourth Proportional to 323.14, 484.27 and 140.28

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Solution

The fourth proportional to 323.14, 484.27 and 140.28 is: 210.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.14 : 484.27 = 140.28 : x
  2. Step 2: Convert to fraction form
    323.14/484.27 = 140.28/x
  3. Step 3: Cross multiply
    323.14x = 484.27 × 140.28
  4. Step 4: Simplify right side
    323.14x = 67,933.40
  5. Step 5: Solve for x
    x = 67,933.40/323.14
  6. Step 6: Final answer
    x = 210.23

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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.