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Finding the Fourth Proportional to 537.30, 805.68 and 212.49

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Solution

The fourth proportional to 537.30, 805.68 and 212.49 is: 318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.30 : 805.68 = 212.49 : x
  2. Step 2: Convert to fraction form
    537.30/805.68 = 212.49/x
  3. Step 3: Cross multiply
    537.30x = 805.68 × 212.49
  4. Step 4: Simplify right side
    537.30x = 171,198.94
  5. Step 5: Solve for x
    x = 171,198.94/537.30
  6. Step 6: Final answer
    x = 318.63

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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.