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Finding the Fourth Proportional to 1,022.88, 1,533.42 and 406.26

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Solution

The fourth proportional to 1,022.88, 1,533.42 and 406.26 is: 609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.88 : 1,533.42 = 406.26 : x
  2. Step 2: Convert to fraction form
    1,022.88/1,533.42 = 406.26/x
  3. Step 3: Cross multiply
    1,022.88x = 1,533.42 × 406.26
  4. Step 4: Simplify right side
    1,022.88x = 622,967.21
  5. Step 5: Solve for x
    x = 622,967.21/1,022.88
  6. Step 6: Final answer
    x = 609.03

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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.