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Finding the Fourth Proportional to 338.07, 507.83 and 251.67

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Solution

The fourth proportional to 338.07, 507.83 and 251.67 is: 378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.07 : 507.83 = 251.67 : x
  2. Step 2: Convert to fraction form
    338.07/507.83 = 251.67/x
  3. Step 3: Cross multiply
    338.07x = 507.83 × 251.67
  4. Step 4: Simplify right side
    338.07x = 127,804.32
  5. Step 5: Solve for x
    x = 127,804.32/338.07
  6. Step 6: Final answer
    x = 378.04

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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.