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Finding the Fourth Proportional to 832.25, 1,147.73 and 548.54

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Solution

The fourth proportional to 832.25, 1,147.73 and 548.54 is: 756.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.25 : 1,147.73 = 548.54 : x
  2. Step 2: Convert to fraction form
    832.25/1,147.73 = 548.54/x
  3. Step 3: Cross multiply
    832.25x = 1,147.73 × 548.54
  4. Step 4: Simplify right side
    832.25x = 629,567.33
  5. Step 5: Solve for x
    x = 629,567.33/832.25
  6. Step 6: Final answer
    x = 756.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.