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Finding the Fourth Proportional to 437.75, 656.55 and 163.80

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Solution

The fourth proportional to 437.75, 656.55 and 163.80 is: 245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.75 : 656.55 = 163.80 : x
  2. Step 2: Convert to fraction form
    437.75/656.55 = 163.80/x
  3. Step 3: Cross multiply
    437.75x = 656.55 × 163.80
  4. Step 4: Simplify right side
    437.75x = 107,542.89
  5. Step 5: Solve for x
    x = 107,542.89/437.75
  6. Step 6: Final answer
    x = 245.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.