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Finding the Fourth Proportional to 245.85, 368.40 and 196.92

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Solution

The fourth proportional to 245.85, 368.40 and 196.92 is: 295.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.85 : 368.40 = 196.92 : x
  2. Step 2: Convert to fraction form
    245.85/368.40 = 196.92/x
  3. Step 3: Cross multiply
    245.85x = 368.40 × 196.92
  4. Step 4: Simplify right side
    245.85x = 72,545.33
  5. Step 5: Solve for x
    x = 72,545.33/245.85
  6. Step 6: Final answer
    x = 295.08

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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.