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Finding the Fourth Proportional to 1,680.35, 2,520.75 and 626.03

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Solution

The fourth proportional to 1,680.35, 2,520.75 and 626.03 is: 939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.35 : 2,520.75 = 626.03 : x
  2. Step 2: Convert to fraction form
    1,680.35/2,520.75 = 626.03/x
  3. Step 3: Cross multiply
    1,680.35x = 2,520.75 × 626.03
  4. Step 4: Simplify right side
    1,680.35x = 1,578,064.32
  5. Step 5: Solve for x
    x = 1,578,064.32/1,680.35
  6. Step 6: Final answer
    x = 939.13

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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.