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Finding the Fourth Proportional to 74.22, 101.70 and 73.44

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Solution

The fourth proportional to 74.22, 101.70 and 73.44 is: 100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.22 : 101.70 = 73.44 : x
  2. Step 2: Convert to fraction form
    74.22/101.70 = 73.44/x
  3. Step 3: Cross multiply
    74.22x = 101.70 × 73.44
  4. Step 4: Simplify right side
    74.22x = 7,468.85
  5. Step 5: Solve for x
    x = 7,468.85/74.22
  6. Step 6: Final answer
    x = 100.63

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