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Finding the Fourth Proportional to 79.22, 119.52 and 75.58

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Solution

The fourth proportional to 79.22, 119.52 and 75.58 is: 114.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.22 : 119.52 = 75.58 : x
  2. Step 2: Convert to fraction form
    79.22/119.52 = 75.58/x
  3. Step 3: Cross multiply
    79.22x = 119.52 × 75.58
  4. Step 4: Simplify right side
    79.22x = 9,033.32
  5. Step 5: Solve for x
    x = 9,033.32/79.22
  6. Step 6: Final answer
    x = 114.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.