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Finding the Fourth Proportional to 507.77, 761.44 and 219

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Solution

The fourth proportional to 507.77, 761.44 and 219 is: 328.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.77 : 761.44 = 219 : x
  2. Step 2: Convert to fraction form
    507.77/761.44 = 219/x
  3. Step 3: Cross multiply
    507.77x = 761.44 × 219
  4. Step 4: Simplify right side
    507.77x = 166,755.36
  5. Step 5: Solve for x
    x = 166,755.36/507.77
  6. Step 6: Final answer
    x = 328.41

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