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Finding the Fourth Proportional to 187, 280.46 and 132.74

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Solution

The fourth proportional to 187, 280.46 and 132.74 is: 199.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    187 : 280.46 = 132.74 : x
  2. Step 2: Convert to fraction form
    187/280.46 = 132.74/x
  3. Step 3: Cross multiply
    187x = 280.46 × 132.74
  4. Step 4: Simplify right side
    187x = 37,228.26
  5. Step 5: Solve for x
    x = 37,228.26/187
  6. Step 6: Final answer
    x = 199.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.