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Finding the Fourth Proportional to 481.01, 721.44 and 188.53

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Solution

The fourth proportional to 481.01, 721.44 and 188.53 is: 282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.01 : 721.44 = 188.53 : x
  2. Step 2: Convert to fraction form
    481.01/721.44 = 188.53/x
  3. Step 3: Cross multiply
    481.01x = 721.44 × 188.53
  4. Step 4: Simplify right side
    481.01x = 136,011.28
  5. Step 5: Solve for x
    x = 136,011.28/481.01
  6. Step 6: Final answer
    x = 282.76

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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.