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Finding the Fourth Proportional to 884.23, 1,220.64 and 552.87

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Solution

The fourth proportional to 884.23, 1,220.64 and 552.87 is: 763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.23 : 1,220.64 = 552.87 : x
  2. Step 2: Convert to fraction form
    884.23/1,220.64 = 552.87/x
  3. Step 3: Cross multiply
    884.23x = 1,220.64 × 552.87
  4. Step 4: Simplify right side
    884.23x = 674,855.24
  5. Step 5: Solve for x
    x = 674,855.24/884.23
  6. Step 6: Final answer
    x = 763.21

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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.