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Finding the Fourth Proportional to 1,521.62, 2,281.29 and 481.05

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Solution

The fourth proportional to 1,521.62, 2,281.29 and 481.05 is: 721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.62 : 2,281.29 = 481.05 : x
  2. Step 2: Convert to fraction form
    1,521.62/2,281.29 = 481.05/x
  3. Step 3: Cross multiply
    1,521.62x = 2,281.29 × 481.05
  4. Step 4: Simplify right side
    1,521.62x = 1,097,414.55
  5. Step 5: Solve for x
    x = 1,097,414.55/1,521.62
  6. Step 6: Final answer
    x = 721.22

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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.