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Finding the Fourth Proportional to 276.84, 415.29 and 154.94

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Solution

The fourth proportional to 276.84, 415.29 and 154.94 is: 232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.84 : 415.29 = 154.94 : x
  2. Step 2: Convert to fraction form
    276.84/415.29 = 154.94/x
  3. Step 3: Cross multiply
    276.84x = 415.29 × 154.94
  4. Step 4: Simplify right side
    276.84x = 64,342.96
  5. Step 5: Solve for x
    x = 64,342.96/276.84
  6. Step 6: Final answer
    x = 232.42

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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.