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Finding the Fourth Proportional to 74.03, 101.49 and 72.73

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Solution

The fourth proportional to 74.03, 101.49 and 72.73 is: 99.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.03 : 101.49 = 72.73 : x
  2. Step 2: Convert to fraction form
    74.03/101.49 = 72.73/x
  3. Step 3: Cross multiply
    74.03x = 101.49 × 72.73
  4. Step 4: Simplify right side
    74.03x = 7,381.37
  5. Step 5: Solve for x
    x = 7,381.37/74.03
  6. Step 6: Final answer
    x = 99.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.