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Finding the Fourth Proportional to 245.94, 368.91 and 108.91

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Solution

The fourth proportional to 245.94, 368.91 and 108.91 is: 163.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.94 : 368.91 = 108.91 : x
  2. Step 2: Convert to fraction form
    245.94/368.91 = 108.91/x
  3. Step 3: Cross multiply
    245.94x = 368.91 × 108.91
  4. Step 4: Simplify right side
    245.94x = 40,178.45
  5. Step 5: Solve for x
    x = 40,178.45/245.94
  6. Step 6: Final answer
    x = 163.37

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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.