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Finding the Fourth Proportional to 1,601.49, 2,401.88 and 613.97

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Solution

The fourth proportional to 1,601.49, 2,401.88 and 613.97 is: 920.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.49 : 2,401.88 = 613.97 : x
  2. Step 2: Convert to fraction form
    1,601.49/2,401.88 = 613.97/x
  3. Step 3: Cross multiply
    1,601.49x = 2,401.88 × 613.97
  4. Step 4: Simplify right side
    1,601.49x = 1,474,667.18
  5. Step 5: Solve for x
    x = 1,474,667.18/1,601.49
  6. Step 6: Final answer
    x = 920.81

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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.