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Finding the Fourth Proportional to 287.05, 430.47 and 94.63

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Solution

The fourth proportional to 287.05, 430.47 and 94.63 is: 141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.05 : 430.47 = 94.63 : x
  2. Step 2: Convert to fraction form
    287.05/430.47 = 94.63/x
  3. Step 3: Cross multiply
    287.05x = 430.47 × 94.63
  4. Step 4: Simplify right side
    287.05x = 40,735.38
  5. Step 5: Solve for x
    x = 40,735.38/287.05
  6. Step 6: Final answer
    x = 141.91

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