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Finding the Fourth Proportional to 34.81, 48.03 and 20.25

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Solution

The fourth proportional to 34.81, 48.03 and 20.25 is: 27.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.81 : 48.03 = 20.25 : x
  2. Step 2: Convert to fraction form
    34.81/48.03 = 20.25/x
  3. Step 3: Cross multiply
    34.81x = 48.03 × 20.25
  4. Step 4: Simplify right side
    34.81x = 972.53
  5. Step 5: Solve for x
    x = 972.53/34.81
  6. Step 6: Final answer
    x = 27.94

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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.