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Finding the Fourth Proportional to 48.49, 72.27 and 48.09

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Solution

The fourth proportional to 48.49, 72.27 and 48.09 is: 71.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.49 : 72.27 = 48.09 : x
  2. Step 2: Convert to fraction form
    48.49/72.27 = 48.09/x
  3. Step 3: Cross multiply
    48.49x = 72.27 × 48.09
  4. Step 4: Simplify right side
    48.49x = 3,474.94
  5. Step 5: Solve for x
    x = 3,474.94/48.49
  6. Step 6: Final answer
    x = 71.66

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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.