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Finding the Fourth Proportional to 528.81, 793.26 and 163.86

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Solution

The fourth proportional to 528.81, 793.26 and 163.86 is: 245.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.81 : 793.26 = 163.86 : x
  2. Step 2: Convert to fraction form
    528.81/793.26 = 163.86/x
  3. Step 3: Cross multiply
    528.81x = 793.26 × 163.86
  4. Step 4: Simplify right side
    528.81x = 129,983.58
  5. Step 5: Solve for x
    x = 129,983.58/528.81
  6. Step 6: Final answer
    x = 245.80

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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.