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Finding the Fourth Proportional to 336.44, 505.26 and 321.05

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Solution

The fourth proportional to 336.44, 505.26 and 321.05 is: 482.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.44 : 505.26 = 321.05 : x
  2. Step 2: Convert to fraction form
    336.44/505.26 = 321.05/x
  3. Step 3: Cross multiply
    336.44x = 505.26 × 321.05
  4. Step 4: Simplify right side
    336.44x = 162,211.20
  5. Step 5: Solve for x
    x = 162,211.20/336.44
  6. Step 6: Final answer
    x = 482.15

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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.