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Finding the Fourth Proportional to 1,168.80, 1,751.36 and 620.84

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Solution

The fourth proportional to 1,168.80, 1,751.36 and 620.84 is: 930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.80 : 1,751.36 = 620.84 : x
  2. Step 2: Convert to fraction form
    1,168.80/1,751.36 = 620.84/x
  3. Step 3: Cross multiply
    1,168.80x = 1,751.36 × 620.84
  4. Step 4: Simplify right side
    1,168.80x = 1,087,314.34
  5. Step 5: Solve for x
    x = 1,087,314.34/1,168.80
  6. Step 6: Final answer
    x = 930.28

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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.