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Finding the Fourth Proportional to 583.10, 874.56 and 217.80

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Solution

The fourth proportional to 583.10, 874.56 and 217.80 is: 326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.10 : 874.56 = 217.80 : x
  2. Step 2: Convert to fraction form
    583.10/874.56 = 217.80/x
  3. Step 3: Cross multiply
    583.10x = 874.56 × 217.80
  4. Step 4: Simplify right side
    583.10x = 190,479.17
  5. Step 5: Solve for x
    x = 190,479.17/583.10
  6. Step 6: Final answer
    x = 326.67

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