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Finding the Fourth Proportional to 647.10, 970.82 and 281.96

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Solution

The fourth proportional to 647.10, 970.82 and 281.96 is: 423.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.10 : 970.82 = 281.96 : x
  2. Step 2: Convert to fraction form
    647.10/970.82 = 281.96/x
  3. Step 3: Cross multiply
    647.10x = 970.82 × 281.96
  4. Step 4: Simplify right side
    647.10x = 273,732.41
  5. Step 5: Solve for x
    x = 273,732.41/647.10
  6. Step 6: Final answer
    x = 423.01

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