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Finding the Fourth Proportional to 397.04, 596.16 and 389.75

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Solution

The fourth proportional to 397.04, 596.16 and 389.75 is: 585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.04 : 596.16 = 389.75 : x
  2. Step 2: Convert to fraction form
    397.04/596.16 = 389.75/x
  3. Step 3: Cross multiply
    397.04x = 596.16 × 389.75
  4. Step 4: Simplify right side
    397.04x = 232,350.38
  5. Step 5: Solve for x
    x = 232,350.38/397.04
  6. Step 6: Final answer
    x = 585.21

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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.