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Finding the Fourth Proportional to 396.60, 547.80 and 350.10

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Solution

The fourth proportional to 396.60, 547.80 and 350.10 is: 483.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.60 : 547.80 = 350.10 : x
  2. Step 2: Convert to fraction form
    396.60/547.80 = 350.10/x
  3. Step 3: Cross multiply
    396.60x = 547.80 × 350.10
  4. Step 4: Simplify right side
    396.60x = 191,784.78
  5. Step 5: Solve for x
    x = 191,784.78/396.60
  6. Step 6: Final answer
    x = 483.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.