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Finding the Fourth Proportional to 48.82, 73.66 and 48.28

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Solution

The fourth proportional to 48.82, 73.66 and 48.28 is: 72.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.82 : 73.66 = 48.28 : x
  2. Step 2: Convert to fraction form
    48.82/73.66 = 48.28/x
  3. Step 3: Cross multiply
    48.82x = 73.66 × 48.28
  4. Step 4: Simplify right side
    48.82x = 3,556.30
  5. Step 5: Solve for x
    x = 3,556.30/48.82
  6. Step 6: Final answer
    x = 72.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.