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Finding the Fourth Proportional to 528.61, 793.02 and 163.42

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Solution

The fourth proportional to 528.61, 793.02 and 163.42 is: 245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.61 : 793.02 = 163.42 : x
  2. Step 2: Convert to fraction form
    528.61/793.02 = 163.42/x
  3. Step 3: Cross multiply
    528.61x = 793.02 × 163.42
  4. Step 4: Simplify right side
    528.61x = 129,596.93
  5. Step 5: Solve for x
    x = 129,596.93/528.61
  6. Step 6: Final answer
    x = 245.17

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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.