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Finding the Fourth Proportional to 215.08, 322.61 and 52.76

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Solution

The fourth proportional to 215.08, 322.61 and 52.76 is: 79.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.08 : 322.61 = 52.76 : x
  2. Step 2: Convert to fraction form
    215.08/322.61 = 52.76/x
  3. Step 3: Cross multiply
    215.08x = 322.61 × 52.76
  4. Step 4: Simplify right side
    215.08x = 17,020.90
  5. Step 5: Solve for x
    x = 17,020.90/215.08
  6. Step 6: Final answer
    x = 79.14

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