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Finding the Fourth Proportional to 10.30, 15.44 and 7.62

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Solution

The fourth proportional to 10.30, 15.44 and 7.62 is: 11.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.30 : 15.44 = 7.62 : x
  2. Step 2: Convert to fraction form
    10.30/15.44 = 7.62/x
  3. Step 3: Cross multiply
    10.30x = 15.44 × 7.62
  4. Step 4: Simplify right side
    10.30x = 117.65
  5. Step 5: Solve for x
    x = 117.65/10.30
  6. Step 6: Final answer
    x = 11.42

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