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Finding the Fourth Proportional to 1,957.70, 2,936.55 and 496.85

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Solution

The fourth proportional to 1,957.70, 2,936.55 and 496.85 is: 745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.70 : 2,936.55 = 496.85 : x
  2. Step 2: Convert to fraction form
    1,957.70/2,936.55 = 496.85/x
  3. Step 3: Cross multiply
    1,957.70x = 2,936.55 × 496.85
  4. Step 4: Simplify right side
    1,957.70x = 1,459,023.06
  5. Step 5: Solve for x
    x = 1,459,023.06/1,957.70
  6. Step 6: Final answer
    x = 745.28

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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.