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Finding the Fourth Proportional to 371, 511.80 and 283.64

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Solution

The fourth proportional to 371, 511.80 and 283.64 is: 391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    371 : 511.80 = 283.64 : x
  2. Step 2: Convert to fraction form
    371/511.80 = 283.64/x
  3. Step 3: Cross multiply
    371x = 511.80 × 283.64
  4. Step 4: Simplify right side
    371x = 145,166.95
  5. Step 5: Solve for x
    x = 145,166.95/371
  6. Step 6: Final answer
    x = 391.29

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