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Finding the Fourth Proportional to 528.79, 793.19 and 163.57

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Solution

The fourth proportional to 528.79, 793.19 and 163.57 is: 245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.79 : 793.19 = 163.57 : x
  2. Step 2: Convert to fraction form
    528.79/793.19 = 163.57/x
  3. Step 3: Cross multiply
    528.79x = 793.19 × 163.57
  4. Step 4: Simplify right side
    528.79x = 129,742.09
  5. Step 5: Solve for x
    x = 129,742.09/528.79
  6. Step 6: Final answer
    x = 245.36

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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.