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Finding the Fourth Proportional to 654.26, 980.43 and 329.18

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Solution

The fourth proportional to 654.26, 980.43 and 329.18 is: 493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.26 : 980.43 = 329.18 : x
  2. Step 2: Convert to fraction form
    654.26/980.43 = 329.18/x
  3. Step 3: Cross multiply
    654.26x = 980.43 × 329.18
  4. Step 4: Simplify right side
    654.26x = 322,737.95
  5. Step 5: Solve for x
    x = 322,737.95/654.26
  6. Step 6: Final answer
    x = 493.29

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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.