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Finding the Fourth Proportional to 48.82, 67.31 and 43.90

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Solution

The fourth proportional to 48.82, 67.31 and 43.90 is: 60.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.82 : 67.31 = 43.90 : x
  2. Step 2: Convert to fraction form
    48.82/67.31 = 43.90/x
  3. Step 3: Cross multiply
    48.82x = 67.31 × 43.90
  4. Step 4: Simplify right side
    48.82x = 2,954.91
  5. Step 5: Solve for x
    x = 2,954.91/48.82
  6. Step 6: Final answer
    x = 60.53

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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.