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Finding the Fourth Proportional to 325.03, 448.53 and 198.95

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Solution

The fourth proportional to 325.03, 448.53 and 198.95 is: 274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.03 : 448.53 = 198.95 : x
  2. Step 2: Convert to fraction form
    325.03/448.53 = 198.95/x
  3. Step 3: Cross multiply
    325.03x = 448.53 × 198.95
  4. Step 4: Simplify right side
    325.03x = 89,235.23
  5. Step 5: Solve for x
    x = 89,235.23/325.03
  6. Step 6: Final answer
    x = 274.55

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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.