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Finding the Fourth Proportional to 154.25, 212.88 and 96.05

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Solution

The fourth proportional to 154.25, 212.88 and 96.05 is: 132.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.25 : 212.88 = 96.05 : x
  2. Step 2: Convert to fraction form
    154.25/212.88 = 96.05/x
  3. Step 3: Cross multiply
    154.25x = 212.88 × 96.05
  4. Step 4: Simplify right side
    154.25x = 20,447.12
  5. Step 5: Solve for x
    x = 20,447.12/154.25
  6. Step 6: Final answer
    x = 132.56

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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.