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Finding the Fourth Proportional to 333.32, 499.56 and 211.61

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Solution

The fourth proportional to 333.32, 499.56 and 211.61 is: 317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.32 : 499.56 = 211.61 : x
  2. Step 2: Convert to fraction form
    333.32/499.56 = 211.61/x
  3. Step 3: Cross multiply
    333.32x = 499.56 × 211.61
  4. Step 4: Simplify right side
    333.32x = 105,712.08
  5. Step 5: Solve for x
    x = 105,712.08/333.32
  6. Step 6: Final answer
    x = 317.15

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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.