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Finding the Fourth Proportional to 436.67, 601.91 and 331.42

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Solution

The fourth proportional to 436.67, 601.91 and 331.42 is: 456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.67 : 601.91 = 331.42 : x
  2. Step 2: Convert to fraction form
    436.67/601.91 = 331.42/x
  3. Step 3: Cross multiply
    436.67x = 601.91 × 331.42
  4. Step 4: Simplify right side
    436.67x = 199,485.01
  5. Step 5: Solve for x
    x = 199,485.01/436.67
  6. Step 6: Final answer
    x = 456.83

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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.