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Finding the Fourth Proportional to 132.84, 183.35 and 86.23

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Solution

The fourth proportional to 132.84, 183.35 and 86.23 is: 119.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.84 : 183.35 = 86.23 : x
  2. Step 2: Convert to fraction form
    132.84/183.35 = 86.23/x
  3. Step 3: Cross multiply
    132.84x = 183.35 × 86.23
  4. Step 4: Simplify right side
    132.84x = 15,810.27
  5. Step 5: Solve for x
    x = 15,810.27/132.84
  6. Step 6: Final answer
    x = 119.02

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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.