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Finding the Fourth Proportional to 1,905.25, 2,857.98 and 735.26

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Solution

The fourth proportional to 1,905.25, 2,857.98 and 735.26 is: 1,102.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.25 : 2,857.98 = 735.26 : x
  2. Step 2: Convert to fraction form
    1,905.25/2,857.98 = 735.26/x
  3. Step 3: Cross multiply
    1,905.25x = 2,857.98 × 735.26
  4. Step 4: Simplify right side
    1,905.25x = 2,101,350.41
  5. Step 5: Solve for x
    x = 2,101,350.41/1,905.25
  6. Step 6: Final answer
    x = 1,102.93

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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.