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Finding the Fourth Proportional to 450.56, 621.73 and 275.87

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Solution

The fourth proportional to 450.56, 621.73 and 275.87 is: 380.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.56 : 621.73 = 275.87 : x
  2. Step 2: Convert to fraction form
    450.56/621.73 = 275.87/x
  3. Step 3: Cross multiply
    450.56x = 621.73 × 275.87
  4. Step 4: Simplify right side
    450.56x = 171,516.66
  5. Step 5: Solve for x
    x = 171,516.66/450.56
  6. Step 6: Final answer
    x = 380.67

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