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Finding the Fourth Proportional to 515.99, 774.25 and 342.77

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Solution

The fourth proportional to 515.99, 774.25 and 342.77 is: 514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.99 : 774.25 = 342.77 : x
  2. Step 2: Convert to fraction form
    515.99/774.25 = 342.77/x
  3. Step 3: Cross multiply
    515.99x = 774.25 × 342.77
  4. Step 4: Simplify right side
    515.99x = 265,389.89
  5. Step 5: Solve for x
    x = 265,389.89/515.99
  6. Step 6: Final answer
    x = 514.34

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