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Finding the Fourth Proportional to 1,599.75, 2,399.52 and 489.14

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Solution

The fourth proportional to 1,599.75, 2,399.52 and 489.14 is: 733.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,599.75 : 2,399.52 = 489.14 : x
  2. Step 2: Convert to fraction form
    1,599.75/2,399.52 = 489.14/x
  3. Step 3: Cross multiply
    1,599.75x = 2,399.52 × 489.14
  4. Step 4: Simplify right side
    1,599.75x = 1,173,700.05
  5. Step 5: Solve for x
    x = 1,173,700.05/1,599.75
  6. Step 6: Final answer
    x = 733.68

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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.