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Finding the Fourth Proportional to 276.39, 414.63 and 154.53

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Solution

The fourth proportional to 276.39, 414.63 and 154.53 is: 231.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.39 : 414.63 = 154.53 : x
  2. Step 2: Convert to fraction form
    276.39/414.63 = 154.53/x
  3. Step 3: Cross multiply
    276.39x = 414.63 × 154.53
  4. Step 4: Simplify right side
    276.39x = 64,072.77
  5. Step 5: Solve for x
    x = 64,072.77/276.39
  6. Step 6: Final answer
    x = 231.82

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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.