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Finding the Fourth Proportional to 688.76, 950.51 and 394.06

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Solution

The fourth proportional to 688.76, 950.51 and 394.06 is: 543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.76 : 950.51 = 394.06 : x
  2. Step 2: Convert to fraction form
    688.76/950.51 = 394.06/x
  3. Step 3: Cross multiply
    688.76x = 950.51 × 394.06
  4. Step 4: Simplify right side
    688.76x = 374,551.25
  5. Step 5: Solve for x
    x = 374,551.25/688.76
  6. Step 6: Final answer
    x = 543.81

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