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Finding the Fourth Proportional to 902.56, 1,349.52 and 872.32

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Solution

The fourth proportional to 902.56, 1,349.52 and 872.32 is: 1,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.56 : 1,349.52 = 872.32 : x
  2. Step 2: Convert to fraction form
    902.56/1,349.52 = 872.32/x
  3. Step 3: Cross multiply
    902.56x = 1,349.52 × 872.32
  4. Step 4: Simplify right side
    902.56x = 1,177,213.29
  5. Step 5: Solve for x
    x = 1,177,213.29/902.56
  6. Step 6: Final answer
    x = 1,304.30

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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.