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Finding the Fourth Proportional to 386, 578.16 and 375.68

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Solution

The fourth proportional to 386, 578.16 and 375.68 is: 562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386 : 578.16 = 375.68 : x
  2. Step 2: Convert to fraction form
    386/578.16 = 375.68/x
  3. Step 3: Cross multiply
    386x = 578.16 × 375.68
  4. Step 4: Simplify right side
    386x = 217,203.15
  5. Step 5: Solve for x
    x = 217,203.15/386
  6. Step 6: Final answer
    x = 562.70

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