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Finding the Fourth Proportional to 329.97, 494.79 and 124.47

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Solution

The fourth proportional to 329.97, 494.79 and 124.47 is: 186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.97 : 494.79 = 124.47 : x
  2. Step 2: Convert to fraction form
    329.97/494.79 = 124.47/x
  3. Step 3: Cross multiply
    329.97x = 494.79 × 124.47
  4. Step 4: Simplify right side
    329.97x = 61,586.51
  5. Step 5: Solve for x
    x = 61,586.51/329.97
  6. Step 6: Final answer
    x = 186.64

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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.