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Finding the Fourth Proportional to 475.86, 656.70 and 345.44

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Solution

The fourth proportional to 475.86, 656.70 and 345.44 is: 476.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.86 : 656.70 = 345.44 : x
  2. Step 2: Convert to fraction form
    475.86/656.70 = 345.44/x
  3. Step 3: Cross multiply
    475.86x = 656.70 × 345.44
  4. Step 4: Simplify right side
    475.86x = 226,850.45
  5. Step 5: Solve for x
    x = 226,850.45/475.86
  6. Step 6: Final answer
    x = 476.72

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