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Finding the Fourth Proportional to 262.36, 394.08 and 216.87

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Solution

The fourth proportional to 262.36, 394.08 and 216.87 is: 325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.36 : 394.08 = 216.87 : x
  2. Step 2: Convert to fraction form
    262.36/394.08 = 216.87/x
  3. Step 3: Cross multiply
    262.36x = 394.08 × 216.87
  4. Step 4: Simplify right side
    262.36x = 85,464.13
  5. Step 5: Solve for x
    x = 85,464.13/262.36
  6. Step 6: Final answer
    x = 325.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.