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Finding the Fourth Proportional to 1,608.14, 2,412.26 and 513.33

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Solution

The fourth proportional to 1,608.14, 2,412.26 and 513.33 is: 770.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.14 : 2,412.26 = 513.33 : x
  2. Step 2: Convert to fraction form
    1,608.14/2,412.26 = 513.33/x
  3. Step 3: Cross multiply
    1,608.14x = 2,412.26 × 513.33
  4. Step 4: Simplify right side
    1,608.14x = 1,238,285.43
  5. Step 5: Solve for x
    x = 1,238,285.43/1,608.14
  6. Step 6: Final answer
    x = 770.01

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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.