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Finding the Fourth Proportional to 74.03, 110.49 and 69.98

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Solution

The fourth proportional to 74.03, 110.49 and 69.98 is: 104.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.03 : 110.49 = 69.98 : x
  2. Step 2: Convert to fraction form
    74.03/110.49 = 69.98/x
  3. Step 3: Cross multiply
    74.03x = 110.49 × 69.98
  4. Step 4: Simplify right side
    74.03x = 7,731.28
  5. Step 5: Solve for x
    x = 7,731.28/74.03
  6. Step 6: Final answer
    x = 104.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.