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Finding the Fourth Proportional to 187.36, 258.58 and 132.12

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Solution

The fourth proportional to 187.36, 258.58 and 132.12 is: 182.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.36 : 258.58 = 132.12 : x
  2. Step 2: Convert to fraction form
    187.36/258.58 = 132.12/x
  3. Step 3: Cross multiply
    187.36x = 258.58 × 132.12
  4. Step 4: Simplify right side
    187.36x = 34,163.59
  5. Step 5: Solve for x
    x = 34,163.59/187.36
  6. Step 6: Final answer
    x = 182.34

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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.