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Finding the Fourth Proportional to 329.79, 494.16 and 243.03

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Solution

The fourth proportional to 329.79, 494.16 and 243.03 is: 364.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.79 : 494.16 = 243.03 : x
  2. Step 2: Convert to fraction form
    329.79/494.16 = 243.03/x
  3. Step 3: Cross multiply
    329.79x = 494.16 × 243.03
  4. Step 4: Simplify right side
    329.79x = 120,095.70
  5. Step 5: Solve for x
    x = 120,095.70/329.79
  6. Step 6: Final answer
    x = 364.16

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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.