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Finding the Fourth Proportional to 323.64, 484.74 and 208.26

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Solution

The fourth proportional to 323.64, 484.74 and 208.26 is: 311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.64 : 484.74 = 208.26 : x
  2. Step 2: Convert to fraction form
    323.64/484.74 = 208.26/x
  3. Step 3: Cross multiply
    323.64x = 484.74 × 208.26
  4. Step 4: Simplify right side
    323.64x = 100,951.95
  5. Step 5: Solve for x
    x = 100,951.95/323.64
  6. Step 6: Final answer
    x = 311.93

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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.