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Finding the Fourth Proportional to 482.75, 724.79 and 251.81

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Solution

The fourth proportional to 482.75, 724.79 and 251.81 is: 378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.75 : 724.79 = 251.81 : x
  2. Step 2: Convert to fraction form
    482.75/724.79 = 251.81/x
  3. Step 3: Cross multiply
    482.75x = 724.79 × 251.81
  4. Step 4: Simplify right side
    482.75x = 182,504.49
  5. Step 5: Solve for x
    x = 182,504.49/482.75
  6. Step 6: Final answer
    x = 378.06

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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.