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Finding the Fourth Proportional to 997.82, 1,376.61 and 604.70

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Solution

The fourth proportional to 997.82, 1,376.61 and 604.70 is: 834.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.82 : 1,376.61 = 604.70 : x
  2. Step 2: Convert to fraction form
    997.82/1,376.61 = 604.70/x
  3. Step 3: Cross multiply
    997.82x = 1,376.61 × 604.70
  4. Step 4: Simplify right side
    997.82x = 832,429.18
  5. Step 5: Solve for x
    x = 832,429.18/997.82
  6. Step 6: Final answer
    x = 834.25

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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.