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Finding the Fourth Proportional to 305.00, 420.90 and 174

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Solution

The fourth proportional to 305.00, 420.90 and 174 is: 240.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.00 : 420.90 = 174 : x
  2. Step 2: Convert to fraction form
    305.00/420.90 = 174/x
  3. Step 3: Cross multiply
    305.00x = 420.90 × 174
  4. Step 4: Simplify right side
    305.00x = 73,236.60
  5. Step 5: Solve for x
    x = 73,236.60/305.00
  6. Step 6: Final answer
    x = 240.12

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