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Finding the Fourth Proportional to 245.08, 338.19 and 134.55

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Solution

The fourth proportional to 245.08, 338.19 and 134.55 is: 185.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.08 : 338.19 = 134.55 : x
  2. Step 2: Convert to fraction form
    245.08/338.19 = 134.55/x
  3. Step 3: Cross multiply
    245.08x = 338.19 × 134.55
  4. Step 4: Simplify right side
    245.08x = 45,503.46
  5. Step 5: Solve for x
    x = 45,503.46/245.08
  6. Step 6: Final answer
    x = 185.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.