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Finding the Fourth Proportional to 481.96, 723.58 and 287.32

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Solution

The fourth proportional to 481.96, 723.58 and 287.32 is: 431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.96 : 723.58 = 287.32 : x
  2. Step 2: Convert to fraction form
    481.96/723.58 = 287.32/x
  3. Step 3: Cross multiply
    481.96x = 723.58 × 287.32
  4. Step 4: Simplify right side
    481.96x = 207,899.01
  5. Step 5: Solve for x
    x = 207,899.01/481.96
  6. Step 6: Final answer
    x = 431.36

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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.