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Finding the Fourth Proportional to 448.08, 672.11 and 424.39

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Solution

The fourth proportional to 448.08, 672.11 and 424.39 is: 636.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.08 : 672.11 = 424.39 : x
  2. Step 2: Convert to fraction form
    448.08/672.11 = 424.39/x
  3. Step 3: Cross multiply
    448.08x = 672.11 × 424.39
  4. Step 4: Simplify right side
    448.08x = 285,233.40
  5. Step 5: Solve for x
    x = 285,233.40/448.08
  6. Step 6: Final answer
    x = 636.57

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