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Finding the Fourth Proportional to 1,484.43, 2,226.47 and 388.88

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Solution

The fourth proportional to 1,484.43, 2,226.47 and 388.88 is: 583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.43 : 2,226.47 = 388.88 : x
  2. Step 2: Convert to fraction form
    1,484.43/2,226.47 = 388.88/x
  3. Step 3: Cross multiply
    1,484.43x = 2,226.47 × 388.88
  4. Step 4: Simplify right side
    1,484.43x = 865,820.03
  5. Step 5: Solve for x
    x = 865,820.03/1,484.43
  6. Step 6: Final answer
    x = 583.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.