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Finding the Fourth Proportional to 884.01, 1,325.42 and 415.32

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Solution

The fourth proportional to 884.01, 1,325.42 and 415.32 is: 622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.01 : 1,325.42 = 415.32 : x
  2. Step 2: Convert to fraction form
    884.01/1,325.42 = 415.32/x
  3. Step 3: Cross multiply
    884.01x = 1,325.42 × 415.32
  4. Step 4: Simplify right side
    884.01x = 550,471.36
  5. Step 5: Solve for x
    x = 550,471.36/884.01
  6. Step 6: Final answer
    x = 622.70

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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.