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Finding the Fourth Proportional to 72.58, 100.08 and 44.94

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Solution

The fourth proportional to 72.58, 100.08 and 44.94 is: 61.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72.58 : 100.08 = 44.94 : x
  2. Step 2: Convert to fraction form
    72.58/100.08 = 44.94/x
  3. Step 3: Cross multiply
    72.58x = 100.08 × 44.94
  4. Step 4: Simplify right side
    72.58x = 4,497.60
  5. Step 5: Solve for x
    x = 4,497.60/72.58
  6. Step 6: Final answer
    x = 61.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.