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Finding the Fourth Proportional to 111.00, 153 and 84.41

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Solution

The fourth proportional to 111.00, 153 and 84.41 is: 116.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.00 : 153 = 84.41 : x
  2. Step 2: Convert to fraction form
    111.00/153 = 84.41/x
  3. Step 3: Cross multiply
    111.00x = 153 × 84.41
  4. Step 4: Simplify right side
    111.00x = 12,914.54
  5. Step 5: Solve for x
    x = 12,914.54/111.00
  6. Step 6: Final answer
    x = 116.34

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1.5x scale

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.