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Finding the Fourth Proportional to 503.88, 756.11 and 211.33

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Solution

The fourth proportional to 503.88, 756.11 and 211.33 is: 317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.88 : 756.11 = 211.33 : x
  2. Step 2: Convert to fraction form
    503.88/756.11 = 211.33/x
  3. Step 3: Cross multiply
    503.88x = 756.11 × 211.33
  4. Step 4: Simplify right side
    503.88x = 159,788.73
  5. Step 5: Solve for x
    x = 159,788.73/503.88
  6. Step 6: Final answer
    x = 317.12

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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.