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Finding the Fourth Proportional to 659.94, 990.30 and 294.73

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Solution

The fourth proportional to 659.94, 990.30 and 294.73 is: 442.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.94 : 990.30 = 294.73 : x
  2. Step 2: Convert to fraction form
    659.94/990.30 = 294.73/x
  3. Step 3: Cross multiply
    659.94x = 990.30 × 294.73
  4. Step 4: Simplify right side
    659.94x = 291,873.79
  5. Step 5: Solve for x
    x = 291,873.79/659.94
  6. Step 6: Final answer
    x = 442.27

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