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Finding the Fourth Proportional to 1,270.52, 1,905.41 and 448.34

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Solution

The fourth proportional to 1,270.52, 1,905.41 and 448.34 is: 672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.52 : 1,905.41 = 448.34 : x
  2. Step 2: Convert to fraction form
    1,270.52/1,905.41 = 448.34/x
  3. Step 3: Cross multiply
    1,270.52x = 1,905.41 × 448.34
  4. Step 4: Simplify right side
    1,270.52x = 854,259.75
  5. Step 5: Solve for x
    x = 854,259.75/1,270.52
  6. Step 6: Final answer
    x = 672.37

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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.