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Finding the Fourth Proportional to 245.37, 338.91 and 178.88

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Solution

The fourth proportional to 245.37, 338.91 and 178.88 is: 247.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.37 : 338.91 = 178.88 : x
  2. Step 2: Convert to fraction form
    245.37/338.91 = 178.88/x
  3. Step 3: Cross multiply
    245.37x = 338.91 × 178.88
  4. Step 4: Simplify right side
    245.37x = 60,622.08
  5. Step 5: Solve for x
    x = 60,622.08/245.37
  6. Step 6: Final answer
    x = 247.06

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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.