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Finding the Fourth Proportional to 1,022.57, 1,533.81 and 329.27

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Solution

The fourth proportional to 1,022.57, 1,533.81 and 329.27 is: 493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.57 : 1,533.81 = 329.27 : x
  2. Step 2: Convert to fraction form
    1,022.57/1,533.81 = 329.27/x
  3. Step 3: Cross multiply
    1,022.57x = 1,533.81 × 329.27
  4. Step 4: Simplify right side
    1,022.57x = 505,037.62
  5. Step 5: Solve for x
    x = 505,037.62/1,022.57
  6. Step 6: Final answer
    x = 493.89

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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.