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Finding the Fourth Proportional to 380.73, 525.46 and 214.95

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Solution

The fourth proportional to 380.73, 525.46 and 214.95 is: 296.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.73 : 525.46 = 214.95 : x
  2. Step 2: Convert to fraction form
    380.73/525.46 = 214.95/x
  3. Step 3: Cross multiply
    380.73x = 525.46 × 214.95
  4. Step 4: Simplify right side
    380.73x = 112,948.40
  5. Step 5: Solve for x
    x = 112,948.40/380.73
  6. Step 6: Final answer
    x = 296.66

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