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Finding the Fourth Proportional to 481.76, 722.56 and 225.12

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Solution

The fourth proportional to 481.76, 722.56 and 225.12 is: 337.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.76 : 722.56 = 225.12 : x
  2. Step 2: Convert to fraction form
    481.76/722.56 = 225.12/x
  3. Step 3: Cross multiply
    481.76x = 722.56 × 225.12
  4. Step 4: Simplify right side
    481.76x = 162,662.71
  5. Step 5: Solve for x
    x = 162,662.71/481.76
  6. Step 6: Final answer
    x = 337.64

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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.