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Finding the Fourth Proportional to 796.21, 1,098.72 and 481.45

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Solution

The fourth proportional to 796.21, 1,098.72 and 481.45 is: 664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.21 : 1,098.72 = 481.45 : x
  2. Step 2: Convert to fraction form
    796.21/1,098.72 = 481.45/x
  3. Step 3: Cross multiply
    796.21x = 1,098.72 × 481.45
  4. Step 4: Simplify right side
    796.21x = 528,978.74
  5. Step 5: Solve for x
    x = 528,978.74/796.21
  6. Step 6: Final answer
    x = 664.37

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1.5x scale

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.