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Finding the Fourth Proportional to 74.33, 110.88 and 73.34

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Solution

The fourth proportional to 74.33, 110.88 and 73.34 is: 109.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.33 : 110.88 = 73.34 : x
  2. Step 2: Convert to fraction form
    74.33/110.88 = 73.34/x
  3. Step 3: Cross multiply
    74.33x = 110.88 × 73.34
  4. Step 4: Simplify right side
    74.33x = 8,131.80
  5. Step 5: Solve for x
    x = 8,131.80/74.33
  6. Step 6: Final answer
    x = 109.40

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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.