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Finding the Fourth Proportional to 1,629.93, 2,441.61 and 751.20

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Solution

The fourth proportional to 1,629.93, 2,441.61 and 751.20 is: 1,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.93 : 2,441.61 = 751.20 : x
  2. Step 2: Convert to fraction form
    1,629.93/2,441.61 = 751.20/x
  3. Step 3: Cross multiply
    1,629.93x = 2,441.61 × 751.20
  4. Step 4: Simplify right side
    1,629.93x = 1,834,137.43
  5. Step 5: Solve for x
    x = 1,834,137.43/1,629.93
  6. Step 6: Final answer
    x = 1,125.29

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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.