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Finding the Fourth Proportional to 397.73, 597.81 and 389.23

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Solution

The fourth proportional to 397.73, 597.81 and 389.23 is: 585.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.73 : 597.81 = 389.23 : x
  2. Step 2: Convert to fraction form
    397.73/597.81 = 389.23/x
  3. Step 3: Cross multiply
    397.73x = 597.81 × 389.23
  4. Step 4: Simplify right side
    397.73x = 232,685.59
  5. Step 5: Solve for x
    x = 232,685.59/397.73
  6. Step 6: Final answer
    x = 585.03

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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.