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Finding the Fourth Proportional to 244.07, 366.21 and 128.49

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Solution

The fourth proportional to 244.07, 366.21 and 128.49 is: 192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.07 : 366.21 = 128.49 : x
  2. Step 2: Convert to fraction form
    244.07/366.21 = 128.49/x
  3. Step 3: Cross multiply
    244.07x = 366.21 × 128.49
  4. Step 4: Simplify right side
    244.07x = 47,052.47
  5. Step 5: Solve for x
    x = 47,052.47/244.07
  6. Step 6: Final answer
    x = 192.78

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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.