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Finding the Fourth Proportional to 66.68, 92.04 and 54.44

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Solution

The fourth proportional to 66.68, 92.04 and 54.44 is: 75.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.68 : 92.04 = 54.44 : x
  2. Step 2: Convert to fraction form
    66.68/92.04 = 54.44/x
  3. Step 3: Cross multiply
    66.68x = 92.04 × 54.44
  4. Step 4: Simplify right side
    66.68x = 5,010.66
  5. Step 5: Solve for x
    x = 5,010.66/66.68
  6. Step 6: Final answer
    x = 75.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.