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Finding the Fourth Proportional to 536.49, 805.08 and 211.88

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Solution

The fourth proportional to 536.49, 805.08 and 211.88 is: 317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.49 : 805.08 = 211.88 : x
  2. Step 2: Convert to fraction form
    536.49/805.08 = 211.88/x
  3. Step 3: Cross multiply
    536.49x = 805.08 × 211.88
  4. Step 4: Simplify right side
    536.49x = 170,576.33
  5. Step 5: Solve for x
    x = 170,576.33/536.49
  6. Step 6: Final answer
    x = 317.95

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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.