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Finding the Fourth Proportional to 500.72, 750.88 and 212

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Solution

The fourth proportional to 500.72, 750.88 and 212 is: 317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.72 : 750.88 = 212 : x
  2. Step 2: Convert to fraction form
    500.72/750.88 = 212/x
  3. Step 3: Cross multiply
    500.72x = 750.88 × 212
  4. Step 4: Simplify right side
    500.72x = 159,186.56
  5. Step 5: Solve for x
    x = 159,186.56/500.72
  6. Step 6: Final answer
    x = 317.92

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