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Finding the Fourth Proportional to 329.13, 492.35 and 246.81

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Solution

The fourth proportional to 329.13, 492.35 and 246.81 is: 369.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.13 : 492.35 = 246.81 : x
  2. Step 2: Convert to fraction form
    329.13/492.35 = 246.81/x
  3. Step 3: Cross multiply
    329.13x = 492.35 × 246.81
  4. Step 4: Simplify right side
    329.13x = 121,516.90
  5. Step 5: Solve for x
    x = 121,516.90/329.13
  6. Step 6: Final answer
    x = 369.21

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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.