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Finding the Fourth Proportional to 73.73, 100.48 and 72.07

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Solution

The fourth proportional to 73.73, 100.48 and 72.07 is: 98.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.73 : 100.48 = 72.07 : x
  2. Step 2: Convert to fraction form
    73.73/100.48 = 72.07/x
  3. Step 3: Cross multiply
    73.73x = 100.48 × 72.07
  4. Step 4: Simplify right side
    73.73x = 7,241.59
  5. Step 5: Solve for x
    x = 7,241.59/73.73
  6. Step 6: Final answer
    x = 98.22

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.