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Finding the Fourth Proportional to 1,512.70, 2,270.22 and 1,376.62

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Solution

The fourth proportional to 1,512.70, 2,270.22 and 1,376.62 is: 2,065.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.70 : 2,270.22 = 1,376.62 : x
  2. Step 2: Convert to fraction form
    1,512.70/2,270.22 = 1,376.62/x
  3. Step 3: Cross multiply
    1,512.70x = 2,270.22 × 1,376.62
  4. Step 4: Simplify right side
    1,512.70x = 3,125,230.26
  5. Step 5: Solve for x
    x = 3,125,230.26/1,512.70
  6. Step 6: Final answer
    x = 2,065.99

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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.