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Finding the Fourth Proportional to 486.53, 671.60 and 329.25

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Solution

The fourth proportional to 486.53, 671.60 and 329.25 is: 454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.53 : 671.60 = 329.25 : x
  2. Step 2: Convert to fraction form
    486.53/671.60 = 329.25/x
  3. Step 3: Cross multiply
    486.53x = 671.60 × 329.25
  4. Step 4: Simplify right side
    486.53x = 221,122.65
  5. Step 5: Solve for x
    x = 221,122.65/486.53
  6. Step 6: Final answer
    x = 454.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.