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Finding the Fourth Proportional to 338.63, 507.94 and 82.13

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Solution

The fourth proportional to 338.63, 507.94 and 82.13 is: 123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.63 : 507.94 = 82.13 : x
  2. Step 2: Convert to fraction form
    338.63/507.94 = 82.13/x
  3. Step 3: Cross multiply
    338.63x = 507.94 × 82.13
  4. Step 4: Simplify right side
    338.63x = 41,714.37
  5. Step 5: Solve for x
    x = 41,714.37/338.63
  6. Step 6: Final answer
    x = 123.19

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