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Finding the Fourth Proportional to 1,629.91, 2,439.91 and 897.27

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Solution

The fourth proportional to 1,629.91, 2,439.91 and 897.27 is: 1,343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.91 : 2,439.91 = 897.27 : x
  2. Step 2: Convert to fraction form
    1,629.91/2,439.91 = 897.27/x
  3. Step 3: Cross multiply
    1,629.91x = 2,439.91 × 897.27
  4. Step 4: Simplify right side
    1,629.91x = 2,189,258.05
  5. Step 5: Solve for x
    x = 2,189,258.05/1,629.91
  6. Step 6: Final answer
    x = 1,343.18

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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.