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Finding the Fourth Proportional to 329.09, 493.32 and 123.79

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Solution

The fourth proportional to 329.09, 493.32 and 123.79 is: 185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.09 : 493.32 = 123.79 : x
  2. Step 2: Convert to fraction form
    329.09/493.32 = 123.79/x
  3. Step 3: Cross multiply
    329.09x = 493.32 × 123.79
  4. Step 4: Simplify right side
    329.09x = 61,069.13
  5. Step 5: Solve for x
    x = 61,069.13/329.09
  6. Step 6: Final answer
    x = 185.57

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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.