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Finding the Fourth Proportional to 438.26, 657.38 and 149.72

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Solution

The fourth proportional to 438.26, 657.38 and 149.72 is: 224.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.26 : 657.38 = 149.72 : x
  2. Step 2: Convert to fraction form
    438.26/657.38 = 149.72/x
  3. Step 3: Cross multiply
    438.26x = 657.38 × 149.72
  4. Step 4: Simplify right side
    438.26x = 98,422.93
  5. Step 5: Solve for x
    x = 98,422.93/438.26
  6. Step 6: Final answer
    x = 224.58

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