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Finding the Fourth Proportional to 396.08, 591.16 and 368.72

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Solution

The fourth proportional to 396.08, 591.16 and 368.72 is: 550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.08 : 591.16 = 368.72 : x
  2. Step 2: Convert to fraction form
    396.08/591.16 = 368.72/x
  3. Step 3: Cross multiply
    396.08x = 591.16 × 368.72
  4. Step 4: Simplify right side
    396.08x = 217,972.52
  5. Step 5: Solve for x
    x = 217,972.52/396.08
  6. Step 6: Final answer
    x = 550.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.