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Finding the Fourth Proportional to 243.19, 333.19 and 240.15

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Solution

The fourth proportional to 243.19, 333.19 and 240.15 is: 329.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.19 : 333.19 = 240.15 : x
  2. Step 2: Convert to fraction form
    243.19/333.19 = 240.15/x
  3. Step 3: Cross multiply
    243.19x = 333.19 × 240.15
  4. Step 4: Simplify right side
    243.19x = 80,015.58
  5. Step 5: Solve for x
    x = 80,015.58/243.19
  6. Step 6: Final answer
    x = 329.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.