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Finding the Fourth Proportional to 301.52, 415.78 and 245.60

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Solution

The fourth proportional to 301.52, 415.78 and 245.60 is: 338.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.52 : 415.78 = 245.60 : x
  2. Step 2: Convert to fraction form
    301.52/415.78 = 245.60/x
  3. Step 3: Cross multiply
    301.52x = 415.78 × 245.60
  4. Step 4: Simplify right side
    301.52x = 102,115.57
  5. Step 5: Solve for x
    x = 102,115.57/301.52
  6. Step 6: Final answer
    x = 338.67

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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.