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Finding the Fourth Proportional to 66.90, 92.28 and 41.03

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Solution

The fourth proportional to 66.90, 92.28 and 41.03 is: 56.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.90 : 92.28 = 41.03 : x
  2. Step 2: Convert to fraction form
    66.90/92.28 = 41.03/x
  3. Step 3: Cross multiply
    66.90x = 92.28 × 41.03
  4. Step 4: Simplify right side
    66.90x = 3,785.58
  5. Step 5: Solve for x
    x = 3,785.58/66.90
  6. Step 6: Final answer
    x = 56.59

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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.