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Finding the Fourth Proportional to 1,356.41, 2,034.62 and 382.55

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Solution

The fourth proportional to 1,356.41, 2,034.62 and 382.55 is: 573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.41 : 2,034.62 = 382.55 : x
  2. Step 2: Convert to fraction form
    1,356.41/2,034.62 = 382.55/x
  3. Step 3: Cross multiply
    1,356.41x = 2,034.62 × 382.55
  4. Step 4: Simplify right side
    1,356.41x = 778,343.88
  5. Step 5: Solve for x
    x = 778,343.88/1,356.41
  6. Step 6: Final answer
    x = 573.83

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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.