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Finding the Fourth Proportional to 599.94, 828.05 and 389.97

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Solution

The fourth proportional to 599.94, 828.05 and 389.97 is: 538.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.94 : 828.05 = 389.97 : x
  2. Step 2: Convert to fraction form
    599.94/828.05 = 389.97/x
  3. Step 3: Cross multiply
    599.94x = 828.05 × 389.97
  4. Step 4: Simplify right side
    599.94x = 322,912.71
  5. Step 5: Solve for x
    x = 322,912.71/599.94
  6. Step 6: Final answer
    x = 538.24

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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.