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Finding the Fourth Proportional to 1,013.01, 1,519.49 and 272.63

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Solution

The fourth proportional to 1,013.01, 1,519.49 and 272.63 is: 408.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.01 : 1,519.49 = 272.63 : x
  2. Step 2: Convert to fraction form
    1,013.01/1,519.49 = 272.63/x
  3. Step 3: Cross multiply
    1,013.01x = 1,519.49 × 272.63
  4. Step 4: Simplify right side
    1,013.01x = 414,251.64
  5. Step 5: Solve for x
    x = 414,251.64/1,013.01
  6. Step 6: Final answer
    x = 408.93

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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.