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Finding the Fourth Proportional to 245.85, 338.46 and 190.50

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Solution

The fourth proportional to 245.85, 338.46 and 190.50 is: 262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.85 : 338.46 = 190.50 : x
  2. Step 2: Convert to fraction form
    245.85/338.46 = 190.50/x
  3. Step 3: Cross multiply
    245.85x = 338.46 × 190.50
  4. Step 4: Simplify right side
    245.85x = 64,476.63
  5. Step 5: Solve for x
    x = 64,476.63/245.85
  6. Step 6: Final answer
    x = 262.26

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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.