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Finding the Fourth Proportional to 1,521.62, 2,282.45 and 481.61

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Solution

The fourth proportional to 1,521.62, 2,282.45 and 481.61 is: 722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.62 : 2,282.45 = 481.61 : x
  2. Step 2: Convert to fraction form
    1,521.62/2,282.45 = 481.61/x
  3. Step 3: Cross multiply
    1,521.62x = 2,282.45 × 481.61
  4. Step 4: Simplify right side
    1,521.62x = 1,099,239.33
  5. Step 5: Solve for x
    x = 1,099,239.33/1,521.62
  6. Step 6: Final answer
    x = 722.41

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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.