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Finding the Fourth Proportional to 485.93, 728.86 and 197.36

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Solution

The fourth proportional to 485.93, 728.86 and 197.36 is: 296.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.93 : 728.86 = 197.36 : x
  2. Step 2: Convert to fraction form
    485.93/728.86 = 197.36/x
  3. Step 3: Cross multiply
    485.93x = 728.86 × 197.36
  4. Step 4: Simplify right side
    485.93x = 143,847.52
  5. Step 5: Solve for x
    x = 143,847.52/485.93
  6. Step 6: Final answer
    x = 296.03

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