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Finding the Fourth Proportional to 482.54, 723.66 and 208.56

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Solution

The fourth proportional to 482.54, 723.66 and 208.56 is: 312.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.54 : 723.66 = 208.56 : x
  2. Step 2: Convert to fraction form
    482.54/723.66 = 208.56/x
  3. Step 3: Cross multiply
    482.54x = 723.66 × 208.56
  4. Step 4: Simplify right side
    482.54x = 150,926.53
  5. Step 5: Solve for x
    x = 150,926.53/482.54
  6. Step 6: Final answer
    x = 312.78

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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.