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Finding the Fourth Proportional to 901.44, 1,351.44 and 709.92

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Solution

The fourth proportional to 901.44, 1,351.44 and 709.92 is: 1,064.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.44 : 1,351.44 = 709.92 : x
  2. Step 2: Convert to fraction form
    901.44/1,351.44 = 709.92/x
  3. Step 3: Cross multiply
    901.44x = 1,351.44 × 709.92
  4. Step 4: Simplify right side
    901.44x = 959,414.28
  5. Step 5: Solve for x
    x = 959,414.28/901.44
  6. Step 6: Final answer
    x = 1,064.31

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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.