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Finding the Fourth Proportional to 245.99, 368.81 and 163.61

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Solution

The fourth proportional to 245.99, 368.81 and 163.61 is: 245.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.99 : 368.81 = 163.61 : x
  2. Step 2: Convert to fraction form
    245.99/368.81 = 163.61/x
  3. Step 3: Cross multiply
    245.99x = 368.81 × 163.61
  4. Step 4: Simplify right side
    245.99x = 60,338.34
  5. Step 5: Solve for x
    x = 60,338.34/245.99
  6. Step 6: Final answer
    x = 245.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.