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Finding the Fourth Proportional to 225.21, 310.87 and 132.00

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Solution

The fourth proportional to 225.21, 310.87 and 132.00 is: 182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.21 : 310.87 = 132.00 : x
  2. Step 2: Convert to fraction form
    225.21/310.87 = 132.00/x
  3. Step 3: Cross multiply
    225.21x = 310.87 × 132.00
  4. Step 4: Simplify right side
    225.21x = 41,033.84
  5. Step 5: Solve for x
    x = 41,033.84/225.21
  6. Step 6: Final answer
    x = 182.20

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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.