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Finding the Fourth Proportional to 251.23, 375.90 and 212.77

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Solution

The fourth proportional to 251.23, 375.90 and 212.77 is: 318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.23 : 375.90 = 212.77 : x
  2. Step 2: Convert to fraction form
    251.23/375.90 = 212.77/x
  3. Step 3: Cross multiply
    251.23x = 375.90 × 212.77
  4. Step 4: Simplify right side
    251.23x = 79,980.24
  5. Step 5: Solve for x
    x = 79,980.24/251.23
  6. Step 6: Final answer
    x = 318.35

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