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Finding the Fourth Proportional to 84.37, 125.86 and 83.29

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Solution

The fourth proportional to 84.37, 125.86 and 83.29 is: 124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.37 : 125.86 = 83.29 : x
  2. Step 2: Convert to fraction form
    84.37/125.86 = 83.29/x
  3. Step 3: Cross multiply
    84.37x = 125.86 × 83.29
  4. Step 4: Simplify right side
    84.37x = 10,482.88
  5. Step 5: Solve for x
    x = 10,482.88/84.37
  6. Step 6: Final answer
    x = 124.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.