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Finding the Fourth Proportional to 245.12, 338.27 and 134.60

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Solution

The fourth proportional to 245.12, 338.27 and 134.60 is: 185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.12 : 338.27 = 134.60 : x
  2. Step 2: Convert to fraction form
    245.12/338.27 = 134.60/x
  3. Step 3: Cross multiply
    245.12x = 338.27 × 134.60
  4. Step 4: Simplify right side
    245.12x = 45,532.32
  5. Step 5: Solve for x
    x = 45,532.32/245.12
  6. Step 6: Final answer
    x = 185.75

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