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Finding the Fourth Proportional to 448.31, 672.69 and 159.77

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Solution

The fourth proportional to 448.31, 672.69 and 159.77 is: 239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.31 : 672.69 = 159.77 : x
  2. Step 2: Convert to fraction form
    448.31/672.69 = 159.77/x
  3. Step 3: Cross multiply
    448.31x = 672.69 × 159.77
  4. Step 4: Simplify right side
    448.31x = 107,475.68
  5. Step 5: Solve for x
    x = 107,475.68/448.31
  6. Step 6: Final answer
    x = 239.74

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