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Finding the Fourth Proportional to 1,448.35, 2,172.06 and 523.78

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Solution

The fourth proportional to 1,448.35, 2,172.06 and 523.78 is: 785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.35 : 2,172.06 = 523.78 : x
  2. Step 2: Convert to fraction form
    1,448.35/2,172.06 = 523.78/x
  3. Step 3: Cross multiply
    1,448.35x = 2,172.06 × 523.78
  4. Step 4: Simplify right side
    1,448.35x = 1,137,688.33
  5. Step 5: Solve for x
    x = 1,137,688.33/1,448.35
  6. Step 6: Final answer
    x = 785.51

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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.