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Finding the Fourth Proportional to 243.40, 333.61 and 240.04

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Solution

The fourth proportional to 243.40, 333.61 and 240.04 is: 329.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.40 : 333.61 = 240.04 : x
  2. Step 2: Convert to fraction form
    243.40/333.61 = 240.04/x
  3. Step 3: Cross multiply
    243.40x = 333.61 × 240.04
  4. Step 4: Simplify right side
    243.40x = 80,079.74
  5. Step 5: Solve for x
    x = 80,079.74/243.40
  6. Step 6: Final answer
    x = 329.00

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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.