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Finding the Fourth Proportional to 1,295.97, 1,944.33 and 418.45

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Solution

The fourth proportional to 1,295.97, 1,944.33 and 418.45 is: 627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.97 : 1,944.33 = 418.45 : x
  2. Step 2: Convert to fraction form
    1,295.97/1,944.33 = 418.45/x
  3. Step 3: Cross multiply
    1,295.97x = 1,944.33 × 418.45
  4. Step 4: Simplify right side
    1,295.97x = 813,602.80
  5. Step 5: Solve for x
    x = 813,602.80/1,295.97
  6. Step 6: Final answer
    x = 627.80

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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.