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Finding the Fourth Proportional to 698.98, 1,043.84 and 601.78

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Solution

The fourth proportional to 698.98, 1,043.84 and 601.78 is: 898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.98 : 1,043.84 = 601.78 : x
  2. Step 2: Convert to fraction form
    698.98/1,043.84 = 601.78/x
  3. Step 3: Cross multiply
    698.98x = 1,043.84 × 601.78
  4. Step 4: Simplify right side
    698.98x = 628,162.04
  5. Step 5: Solve for x
    x = 628,162.04/698.98
  6. Step 6: Final answer
    x = 898.68

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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.