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Finding the Fourth Proportional to 276.85, 382.03 and 152.49

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Solution

The fourth proportional to 276.85, 382.03 and 152.49 is: 210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.85 : 382.03 = 152.49 : x
  2. Step 2: Convert to fraction form
    276.85/382.03 = 152.49/x
  3. Step 3: Cross multiply
    276.85x = 382.03 × 152.49
  4. Step 4: Simplify right side
    276.85x = 58,253.84
  5. Step 5: Solve for x
    x = 58,253.84/276.85
  6. Step 6: Final answer
    x = 210.42

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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.