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Finding the Fourth Proportional to 17.91, 26.90 and 16.45

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Solution

The fourth proportional to 17.91, 26.90 and 16.45 is: 24.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.91 : 26.90 = 16.45 : x
  2. Step 2: Convert to fraction form
    17.91/26.90 = 16.45/x
  3. Step 3: Cross multiply
    17.91x = 26.90 × 16.45
  4. Step 4: Simplify right side
    17.91x = 442.36
  5. Step 5: Solve for x
    x = 442.36/17.91
  6. Step 6: Final answer
    x = 24.70

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