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Finding the Fourth Proportional to 884.61, 1,220.11 and 604.55

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Solution

The fourth proportional to 884.61, 1,220.11 and 604.55 is: 833.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.61 : 1,220.11 = 604.55 : x
  2. Step 2: Convert to fraction form
    884.61/1,220.11 = 604.55/x
  3. Step 3: Cross multiply
    884.61x = 1,220.11 × 604.55
  4. Step 4: Simplify right side
    884.61x = 737,608.38
  5. Step 5: Solve for x
    x = 737,608.38/884.61
  6. Step 6: Final answer
    x = 833.83

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Double scale
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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.