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Finding the Fourth Proportional to 1,356.74, 2,034.84 and 626.22

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Solution

The fourth proportional to 1,356.74, 2,034.84 and 626.22 is: 939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.74 : 2,034.84 = 626.22 : x
  2. Step 2: Convert to fraction form
    1,356.74/2,034.84 = 626.22/x
  3. Step 3: Cross multiply
    1,356.74x = 2,034.84 × 626.22
  4. Step 4: Simplify right side
    1,356.74x = 1,274,257.50
  5. Step 5: Solve for x
    x = 1,274,257.50/1,356.74
  6. Step 6: Final answer
    x = 939.21

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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.