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Finding the Fourth Proportional to 884.55, 1,217.52 and 622.11

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Solution

The fourth proportional to 884.55, 1,217.52 and 622.11 is: 856.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.55 : 1,217.52 = 622.11 : x
  2. Step 2: Convert to fraction form
    884.55/1,217.52 = 622.11/x
  3. Step 3: Cross multiply
    884.55x = 1,217.52 × 622.11
  4. Step 4: Simplify right side
    884.55x = 757,431.37
  5. Step 5: Solve for x
    x = 757,431.37/884.55
  6. Step 6: Final answer
    x = 856.29

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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.