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Finding the Fourth Proportional to 74.03, 110.90 and 65.26

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Solution

The fourth proportional to 74.03, 110.90 and 65.26 is: 97.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.03 : 110.90 = 65.26 : x
  2. Step 2: Convert to fraction form
    74.03/110.90 = 65.26/x
  3. Step 3: Cross multiply
    74.03x = 110.90 × 65.26
  4. Step 4: Simplify right side
    74.03x = 7,237.01
  5. Step 5: Solve for x
    x = 7,237.01/74.03
  6. Step 6: Final answer
    x = 97.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.