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Finding the Fourth Proportional to 601.90, 903 and 211.96

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Solution

The fourth proportional to 601.90, 903 and 211.96 is: 317.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.90 : 903 = 211.96 : x
  2. Step 2: Convert to fraction form
    601.90/903 = 211.96/x
  3. Step 3: Cross multiply
    601.90x = 903 × 211.96
  4. Step 4: Simplify right side
    601.90x = 191,399.88
  5. Step 5: Solve for x
    x = 191,399.88/601.90
  6. Step 6: Final answer
    x = 317.99

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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.