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Finding the Fourth Proportional to 248.05, 372.18 and 126.41

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Solution

The fourth proportional to 248.05, 372.18 and 126.41 is: 189.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.05 : 372.18 = 126.41 : x
  2. Step 2: Convert to fraction form
    248.05/372.18 = 126.41/x
  3. Step 3: Cross multiply
    248.05x = 372.18 × 126.41
  4. Step 4: Simplify right side
    248.05x = 47,047.27
  5. Step 5: Solve for x
    x = 47,047.27/248.05
  6. Step 6: Final answer
    x = 189.67

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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.