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Finding the Fourth Proportional to 698.02, 1,043.23 and 552.22

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Solution

The fourth proportional to 698.02, 1,043.23 and 552.22 is: 825.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.02 : 1,043.23 = 552.22 : x
  2. Step 2: Convert to fraction form
    698.02/1,043.23 = 552.22/x
  3. Step 3: Cross multiply
    698.02x = 1,043.23 × 552.22
  4. Step 4: Simplify right side
    698.02x = 576,092.47
  5. Step 5: Solve for x
    x = 576,092.47/698.02
  6. Step 6: Final answer
    x = 825.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.