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Finding the Fourth Proportional to 481.98, 723.36 and 208.32

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Solution

The fourth proportional to 481.98, 723.36 and 208.32 is: 312.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.98 : 723.36 = 208.32 : x
  2. Step 2: Convert to fraction form
    481.98/723.36 = 208.32/x
  3. Step 3: Cross multiply
    481.98x = 723.36 × 208.32
  4. Step 4: Simplify right side
    481.98x = 150,690.36
  5. Step 5: Solve for x
    x = 150,690.36/481.98
  6. Step 6: Final answer
    x = 312.65

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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.