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Finding the Fourth Proportional to 218.68, 328.04 and 110.44

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Solution

The fourth proportional to 218.68, 328.04 and 110.44 is: 165.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.68 : 328.04 = 110.44 : x
  2. Step 2: Convert to fraction form
    218.68/328.04 = 110.44/x
  3. Step 3: Cross multiply
    218.68x = 328.04 × 110.44
  4. Step 4: Simplify right side
    218.68x = 36,228.74
  5. Step 5: Solve for x
    x = 36,228.74/218.68
  6. Step 6: Final answer
    x = 165.67

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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.