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Finding the Fourth Proportional to 291.25, 436.99 and 98.88

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Solution

The fourth proportional to 291.25, 436.99 and 98.88 is: 148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.25 : 436.99 = 98.88 : x
  2. Step 2: Convert to fraction form
    291.25/436.99 = 98.88/x
  3. Step 3: Cross multiply
    291.25x = 436.99 × 98.88
  4. Step 4: Simplify right side
    291.25x = 43,209.57
  5. Step 5: Solve for x
    x = 43,209.57/291.25
  6. Step 6: Final answer
    x = 148.36

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