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Finding the Fourth Proportional to 1,484.73, 2,226.94 and 389.00

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Solution

The fourth proportional to 1,484.73, 2,226.94 and 389.00 is: 583.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.73 : 2,226.94 = 389.00 : x
  2. Step 2: Convert to fraction form
    1,484.73/2,226.94 = 389.00/x
  3. Step 3: Cross multiply
    1,484.73x = 2,226.94 × 389.00
  4. Step 4: Simplify right side
    1,484.73x = 866,286.44
  5. Step 5: Solve for x
    x = 866,286.44/1,484.73
  6. Step 6: Final answer
    x = 583.46

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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.