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Finding the Fourth Proportional to 338.53, 507.11 and 155.67

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Solution

The fourth proportional to 338.53, 507.11 and 155.67 is: 233.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.53 : 507.11 = 155.67 : x
  2. Step 2: Convert to fraction form
    338.53/507.11 = 155.67/x
  3. Step 3: Cross multiply
    338.53x = 507.11 × 155.67
  4. Step 4: Simplify right side
    338.53x = 78,942.20
  5. Step 5: Solve for x
    x = 78,942.20/338.53
  6. Step 6: Final answer
    x = 233.19

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