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Finding the Fourth Proportional to 110.55, 152.52 and 66.28

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Solution

The fourth proportional to 110.55, 152.52 and 66.28 is: 91.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.55 : 152.52 = 66.28 : x
  2. Step 2: Convert to fraction form
    110.55/152.52 = 66.28/x
  3. Step 3: Cross multiply
    110.55x = 152.52 × 66.28
  4. Step 4: Simplify right side
    110.55x = 10,109.03
  5. Step 5: Solve for x
    x = 10,109.03/110.55
  6. Step 6: Final answer
    x = 91.44

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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.