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Finding the Fourth Proportional to 872.08, 1,203.16 and 662.04

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Solution

The fourth proportional to 872.08, 1,203.16 and 662.04 is: 913.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    872.08 : 1,203.16 = 662.04 : x
  2. Step 2: Convert to fraction form
    872.08/1,203.16 = 662.04/x
  3. Step 3: Cross multiply
    872.08x = 1,203.16 × 662.04
  4. Step 4: Simplify right side
    872.08x = 796,540.05
  5. Step 5: Solve for x
    x = 796,540.05/872.08
  6. Step 6: Final answer
    x = 913.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.