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Finding the Fourth Proportional to 480.89, 721.35 and 151.83

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Solution

The fourth proportional to 480.89, 721.35 and 151.83 is: 227.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.89 : 721.35 = 151.83 : x
  2. Step 2: Convert to fraction form
    480.89/721.35 = 151.83/x
  3. Step 3: Cross multiply
    480.89x = 721.35 × 151.83
  4. Step 4: Simplify right side
    480.89x = 109,525.84
  5. Step 5: Solve for x
    x = 109,525.84/480.89
  6. Step 6: Final answer
    x = 227.76

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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.