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Finding the Fourth Proportional to 244.34, 366.72 and 128.87

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Solution

The fourth proportional to 244.34, 366.72 and 128.87 is: 193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.34 : 366.72 = 128.87 : x
  2. Step 2: Convert to fraction form
    244.34/366.72 = 128.87/x
  3. Step 3: Cross multiply
    244.34x = 366.72 × 128.87
  4. Step 4: Simplify right side
    244.34x = 47,259.61
  5. Step 5: Solve for x
    x = 47,259.61/244.34
  6. Step 6: Final answer
    x = 193.41

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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.