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Finding the Fourth Proportional to 901.99, 1,351.38 and 627.55

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Solution

The fourth proportional to 901.99, 1,351.38 and 627.55 is: 940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.99 : 1,351.38 = 627.55 : x
  2. Step 2: Convert to fraction form
    901.99/1,351.38 = 627.55/x
  3. Step 3: Cross multiply
    901.99x = 1,351.38 × 627.55
  4. Step 4: Simplify right side
    901.99x = 848,057.49
  5. Step 5: Solve for x
    x = 848,057.49/901.99
  6. Step 6: Final answer
    x = 940.21

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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.