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Finding the Fourth Proportional to 396.07, 591.32 and 357.19

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Solution

The fourth proportional to 396.07, 591.32 and 357.19 is: 533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.07 : 591.32 = 357.19 : x
  2. Step 2: Convert to fraction form
    396.07/591.32 = 357.19/x
  3. Step 3: Cross multiply
    396.07x = 591.32 × 357.19
  4. Step 4: Simplify right side
    396.07x = 211,213.01
  5. Step 5: Solve for x
    x = 211,213.01/396.07
  6. Step 6: Final answer
    x = 533.28

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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.