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Finding the Fourth Proportional to 284.63, 426.11 and 216.42

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Solution

The fourth proportional to 284.63, 426.11 and 216.42 is: 324.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.63 : 426.11 = 216.42 : x
  2. Step 2: Convert to fraction form
    284.63/426.11 = 216.42/x
  3. Step 3: Cross multiply
    284.63x = 426.11 × 216.42
  4. Step 4: Simplify right side
    284.63x = 92,217.64
  5. Step 5: Solve for x
    x = 92,217.64/284.63
  6. Step 6: Final answer
    x = 324.00

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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.