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Finding the Fourth Proportional to 472.64, 652.18 and 276

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Solution

The fourth proportional to 472.64, 652.18 and 276 is: 380.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.64 : 652.18 = 276 : x
  2. Step 2: Convert to fraction form
    472.64/652.18 = 276/x
  3. Step 3: Cross multiply
    472.64x = 652.18 × 276
  4. Step 4: Simplify right side
    472.64x = 180,001.68
  5. Step 5: Solve for x
    x = 180,001.68/472.64
  6. Step 6: Final answer
    x = 380.84

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