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Finding the Fourth Proportional to 325.40, 448.88 and 194.31

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Solution

The fourth proportional to 325.40, 448.88 and 194.31 is: 268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.40 : 448.88 = 194.31 : x
  2. Step 2: Convert to fraction form
    325.40/448.88 = 194.31/x
  3. Step 3: Cross multiply
    325.40x = 448.88 × 194.31
  4. Step 4: Simplify right side
    325.40x = 87,220.90
  5. Step 5: Solve for x
    x = 87,220.90/325.40
  6. Step 6: Final answer
    x = 268.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.