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Finding the Fourth Proportional to 110.33, 165.50 and 74.15

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Solution

The fourth proportional to 110.33, 165.50 and 74.15 is: 111.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.33 : 165.50 = 74.15 : x
  2. Step 2: Convert to fraction form
    110.33/165.50 = 74.15/x
  3. Step 3: Cross multiply
    110.33x = 165.50 × 74.15
  4. Step 4: Simplify right side
    110.33x = 12,271.45
  5. Step 5: Solve for x
    x = 12,271.45/110.33
  6. Step 6: Final answer
    x = 111.23

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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.