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Finding the Fourth Proportional to 48.82, 72.84 and 43.95

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Solution

The fourth proportional to 48.82, 72.84 and 43.95 is: 65.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.82 : 72.84 = 43.95 : x
  2. Step 2: Convert to fraction form
    48.82/72.84 = 43.95/x
  3. Step 3: Cross multiply
    48.82x = 72.84 × 43.95
  4. Step 4: Simplify right side
    48.82x = 3,201.32
  5. Step 5: Solve for x
    x = 3,201.32/48.82
  6. Step 6: Final answer
    x = 65.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.