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Finding the Fourth Proportional to 338.40, 506.93 and 201.05

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Solution

The fourth proportional to 338.40, 506.93 and 201.05 is: 301.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.40 : 506.93 = 201.05 : x
  2. Step 2: Convert to fraction form
    338.40/506.93 = 201.05/x
  3. Step 3: Cross multiply
    338.40x = 506.93 × 201.05
  4. Step 4: Simplify right side
    338.40x = 101,914.74
  5. Step 5: Solve for x
    x = 101,914.74/338.40
  6. Step 6: Final answer
    x = 301.17

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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.