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Finding the Fourth Proportional to 2,270.65, 3,405.72 and 627.43

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Solution

The fourth proportional to 2,270.65, 3,405.72 and 627.43 is: 941.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.65 : 3,405.72 = 627.43 : x
  2. Step 2: Convert to fraction form
    2,270.65/3,405.72 = 627.43/x
  3. Step 3: Cross multiply
    2,270.65x = 3,405.72 × 627.43
  4. Step 4: Simplify right side
    2,270.65x = 2,136,839.25
  5. Step 5: Solve for x
    x = 2,136,839.25/2,270.65
  6. Step 6: Final answer
    x = 941.07

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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.