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Finding the Fourth Proportional to 645.96, 969 and 450.36

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Solution

The fourth proportional to 645.96, 969 and 450.36 is: 675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.96 : 969 = 450.36 : x
  2. Step 2: Convert to fraction form
    645.96/969 = 450.36/x
  3. Step 3: Cross multiply
    645.96x = 969 × 450.36
  4. Step 4: Simplify right side
    645.96x = 436,398.84
  5. Step 5: Solve for x
    x = 436,398.84/645.96
  6. Step 6: Final answer
    x = 675.58

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