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Finding the Fourth Proportional to 73.08, 110.20 and 72.62

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Solution

The fourth proportional to 73.08, 110.20 and 72.62 is: 109.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.08 : 110.20 = 72.62 : x
  2. Step 2: Convert to fraction form
    73.08/110.20 = 72.62/x
  3. Step 3: Cross multiply
    73.08x = 110.20 × 72.62
  4. Step 4: Simplify right side
    73.08x = 8,002.72
  5. Step 5: Solve for x
    x = 8,002.72/73.08
  6. Step 6: Final answer
    x = 109.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.