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Finding the Fourth Proportional to 535.98, 804.09 and 211.38

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Solution

The fourth proportional to 535.98, 804.09 and 211.38 is: 317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.98 : 804.09 = 211.38 : x
  2. Step 2: Convert to fraction form
    535.98/804.09 = 211.38/x
  3. Step 3: Cross multiply
    535.98x = 804.09 × 211.38
  4. Step 4: Simplify right side
    535.98x = 169,966.32
  5. Step 5: Solve for x
    x = 169,966.32/535.98
  6. Step 6: Final answer
    x = 317.11

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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.