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Finding the Fourth Proportional to 253.08, 349.21 and 154.87

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Solution

The fourth proportional to 253.08, 349.21 and 154.87 is: 213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.08 : 349.21 = 154.87 : x
  2. Step 2: Convert to fraction form
    253.08/349.21 = 154.87/x
  3. Step 3: Cross multiply
    253.08x = 349.21 × 154.87
  4. Step 4: Simplify right side
    253.08x = 54,080.89
  5. Step 5: Solve for x
    x = 54,080.89/253.08
  6. Step 6: Final answer
    x = 213.69

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