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Finding the Fourth Proportional to 1,352.66, 2,028.56 and 622.84

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Solution

The fourth proportional to 1,352.66, 2,028.56 and 622.84 is: 934.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.66 : 2,028.56 = 622.84 : x
  2. Step 2: Convert to fraction form
    1,352.66/2,028.56 = 622.84/x
  3. Step 3: Cross multiply
    1,352.66x = 2,028.56 × 622.84
  4. Step 4: Simplify right side
    1,352.66x = 1,263,468.31
  5. Step 5: Solve for x
    x = 1,263,468.31/1,352.66
  6. Step 6: Final answer
    x = 934.06

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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.