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Finding the Fourth Proportional to 400.98, 602.28 and 329.70

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Solution

The fourth proportional to 400.98, 602.28 and 329.70 is: 495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.98 : 602.28 = 329.70 : x
  2. Step 2: Convert to fraction form
    400.98/602.28 = 329.70/x
  3. Step 3: Cross multiply
    400.98x = 602.28 × 329.70
  4. Step 4: Simplify right side
    400.98x = 198,571.72
  5. Step 5: Solve for x
    x = 198,571.72/400.98
  6. Step 6: Final answer
    x = 495.22

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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.