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Finding the Fourth Proportional to 1,864.75, 2,797.13 and 496.75

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Solution

The fourth proportional to 1,864.75, 2,797.13 and 496.75 is: 745.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.75 : 2,797.13 = 496.75 : x
  2. Step 2: Convert to fraction form
    1,864.75/2,797.13 = 496.75/x
  3. Step 3: Cross multiply
    1,864.75x = 2,797.13 × 496.75
  4. Step 4: Simplify right side
    1,864.75x = 1,389,474.33
  5. Step 5: Solve for x
    x = 1,389,474.33/1,864.75
  6. Step 6: Final answer
    x = 745.13

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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.