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Finding the Fourth Proportional to 245.11, 338.24 and 140.19

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Solution

The fourth proportional to 245.11, 338.24 and 140.19 is: 193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.11 : 338.24 = 140.19 : x
  2. Step 2: Convert to fraction form
    245.11/338.24 = 140.19/x
  3. Step 3: Cross multiply
    245.11x = 338.24 × 140.19
  4. Step 4: Simplify right side
    245.11x = 47,417.87
  5. Step 5: Solve for x
    x = 47,417.87/245.11
  6. Step 6: Final answer
    x = 193.46

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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.