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Finding the Fourth Proportional to 521.61, 782.54 and 192.65

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Solution

The fourth proportional to 521.61, 782.54 and 192.65 is: 289.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.61 : 782.54 = 192.65 : x
  2. Step 2: Convert to fraction form
    521.61/782.54 = 192.65/x
  3. Step 3: Cross multiply
    521.61x = 782.54 × 192.65
  4. Step 4: Simplify right side
    521.61x = 150,758.24
  5. Step 5: Solve for x
    x = 150,758.24/521.61
  6. Step 6: Final answer
    x = 289.02

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