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Finding the Fourth Proportional to 536.97, 805.67 and 212.43

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Solution

The fourth proportional to 536.97, 805.67 and 212.43 is: 318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.97 : 805.67 = 212.43 : x
  2. Step 2: Convert to fraction form
    536.97/805.67 = 212.43/x
  3. Step 3: Cross multiply
    536.97x = 805.67 × 212.43
  4. Step 4: Simplify right side
    536.97x = 171,147.42
  5. Step 5: Solve for x
    x = 171,147.42/536.97
  6. Step 6: Final answer
    x = 318.73

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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.