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Finding the Fourth Proportional to 397.02, 594.58 and 389.73

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Solution

The fourth proportional to 397.02, 594.58 and 389.73 is: 583.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.02 : 594.58 = 389.73 : x
  2. Step 2: Convert to fraction form
    397.02/594.58 = 389.73/x
  3. Step 3: Cross multiply
    397.02x = 594.58 × 389.73
  4. Step 4: Simplify right side
    397.02x = 231,725.66
  5. Step 5: Solve for x
    x = 231,725.66/397.02
  6. Step 6: Final answer
    x = 583.66

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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.