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Finding the Fourth Proportional to 329.48, 493.92 and 123.92

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Solution

The fourth proportional to 329.48, 493.92 and 123.92 is: 185.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.48 : 493.92 = 123.92 : x
  2. Step 2: Convert to fraction form
    329.48/493.92 = 123.92/x
  3. Step 3: Cross multiply
    329.48x = 493.92 × 123.92
  4. Step 4: Simplify right side
    329.48x = 61,206.57
  5. Step 5: Solve for x
    x = 61,206.57/329.48
  6. Step 6: Final answer
    x = 185.77

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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.