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Finding the Fourth Proportional to 154.17, 212.78 and 95.94

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Solution

The fourth proportional to 154.17, 212.78 and 95.94 is: 132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.17 : 212.78 = 95.94 : x
  2. Step 2: Convert to fraction form
    154.17/212.78 = 95.94/x
  3. Step 3: Cross multiply
    154.17x = 212.78 × 95.94
  4. Step 4: Simplify right side
    154.17x = 20,413.63
  5. Step 5: Solve for x
    x = 20,413.63/154.17
  6. Step 6: Final answer
    x = 132.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.