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Finding the Fourth Proportional to 329.93, 495.09 and 147.35

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Solution

The fourth proportional to 329.93, 495.09 and 147.35 is: 221.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.93 : 495.09 = 147.35 : x
  2. Step 2: Convert to fraction form
    329.93/495.09 = 147.35/x
  3. Step 3: Cross multiply
    329.93x = 495.09 × 147.35
  4. Step 4: Simplify right side
    329.93x = 72,949.04
  5. Step 5: Solve for x
    x = 72,949.04/329.93
  6. Step 6: Final answer
    x = 221.11

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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.