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Finding the Fourth Proportional to 751.04, 1,125.76 and 385.44

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Solution

The fourth proportional to 751.04, 1,125.76 and 385.44 is: 577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.04 : 1,125.76 = 385.44 : x
  2. Step 2: Convert to fraction form
    751.04/1,125.76 = 385.44/x
  3. Step 3: Cross multiply
    751.04x = 1,125.76 × 385.44
  4. Step 4: Simplify right side
    751.04x = 433,912.93
  5. Step 5: Solve for x
    x = 433,912.93/751.04
  6. Step 6: Final answer
    x = 577.75

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