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Finding the Fourth Proportional to 698.61, 1,046.36 and 544.29

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Solution

The fourth proportional to 698.61, 1,046.36 and 544.29 is: 815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.61 : 1,046.36 = 544.29 : x
  2. Step 2: Convert to fraction form
    698.61/1,046.36 = 544.29/x
  3. Step 3: Cross multiply
    698.61x = 1,046.36 × 544.29
  4. Step 4: Simplify right side
    698.61x = 569,520.56
  5. Step 5: Solve for x
    x = 569,520.56/698.61
  6. Step 6: Final answer
    x = 815.22

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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.