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Finding the Fourth Proportional to 329.66, 493.57 and 248.25

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Solution

The fourth proportional to 329.66, 493.57 and 248.25 is: 371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.66 : 493.57 = 248.25 : x
  2. Step 2: Convert to fraction form
    329.66/493.57 = 248.25/x
  3. Step 3: Cross multiply
    329.66x = 493.57 × 248.25
  4. Step 4: Simplify right side
    329.66x = 122,528.75
  5. Step 5: Solve for x
    x = 122,528.75/329.66
  6. Step 6: Final answer
    x = 371.68

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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.