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Finding the Fourth Proportional to 1,197.78, 1,797.05 and 376.17

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Solution

The fourth proportional to 1,197.78, 1,797.05 and 376.17 is: 564.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.78 : 1,797.05 = 376.17 : x
  2. Step 2: Convert to fraction form
    1,197.78/1,797.05 = 376.17/x
  3. Step 3: Cross multiply
    1,197.78x = 1,797.05 × 376.17
  4. Step 4: Simplify right side
    1,197.78x = 675,994.42
  5. Step 5: Solve for x
    x = 675,994.42/1,197.78
  6. Step 6: Final answer
    x = 564.37

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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.