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Finding the Fourth Proportional to 1,001.99, 1,503 and 271.55

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Solution

The fourth proportional to 1,001.99, 1,503 and 271.55 is: 407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.99 : 1,503 = 271.55 : x
  2. Step 2: Convert to fraction form
    1,001.99/1,503 = 271.55/x
  3. Step 3: Cross multiply
    1,001.99x = 1,503 × 271.55
  4. Step 4: Simplify right side
    1,001.99x = 408,143.41
  5. Step 5: Solve for x
    x = 408,143.41/1,001.99
  6. Step 6: Final answer
    x = 407.33

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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.