Home / 1,449.50-2,172.21-627.14

Finding the Fourth Proportional to 1,449.50, 2,172.21 and 627.14

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Solution

The fourth proportional to 1,449.50, 2,172.21 and 627.14 is: 939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.50 : 2,172.21 = 627.14 : x
  2. Step 2: Convert to fraction form
    1,449.50/2,172.21 = 627.14/x
  3. Step 3: Cross multiply
    1,449.50x = 2,172.21 × 627.14
  4. Step 4: Simplify right side
    1,449.50x = 1,362,279.78
  5. Step 5: Solve for x
    x = 1,362,279.78/1,449.50
  6. Step 6: Final answer
    x = 939.83

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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.