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Finding the Fourth Proportional to 333.06, 499.79 and 211.38

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Solution

The fourth proportional to 333.06, 499.79 and 211.38 is: 317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.06 : 499.79 = 211.38 : x
  2. Step 2: Convert to fraction form
    333.06/499.79 = 211.38/x
  3. Step 3: Cross multiply
    333.06x = 499.79 × 211.38
  4. Step 4: Simplify right side
    333.06x = 105,645.61
  5. Step 5: Solve for x
    x = 105,645.61/333.06
  6. Step 6: Final answer
    x = 317.20

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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.