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Finding the Fourth Proportional to 245.25, 368.00 and 108.39

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Solution

The fourth proportional to 245.25, 368.00 and 108.39 is: 162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.25 : 368.00 = 108.39 : x
  2. Step 2: Convert to fraction form
    245.25/368.00 = 108.39/x
  3. Step 3: Cross multiply
    245.25x = 368.00 × 108.39
  4. Step 4: Simplify right side
    245.25x = 39,885.14
  5. Step 5: Solve for x
    x = 39,885.14/245.25
  6. Step 6: Final answer
    x = 162.63

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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.