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Finding the Fourth Proportional to 1,481.82, 2,223.47 and 898.21

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Solution

The fourth proportional to 1,481.82, 2,223.47 and 898.21 is: 1,347.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.82 : 2,223.47 = 898.21 : x
  2. Step 2: Convert to fraction form
    1,481.82/2,223.47 = 898.21/x
  3. Step 3: Cross multiply
    1,481.82x = 2,223.47 × 898.21
  4. Step 4: Simplify right side
    1,481.82x = 1,997,142.99
  5. Step 5: Solve for x
    x = 1,997,142.99/1,481.82
  6. Step 6: Final answer
    x = 1,347.76

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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.