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Finding the Fourth Proportional to 131.22, 179.62 and 127.08

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Solution

The fourth proportional to 131.22, 179.62 and 127.08 is: 173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.22 : 179.62 = 127.08 : x
  2. Step 2: Convert to fraction form
    131.22/179.62 = 127.08/x
  3. Step 3: Cross multiply
    131.22x = 179.62 × 127.08
  4. Step 4: Simplify right side
    131.22x = 22,826.11
  5. Step 5: Solve for x
    x = 22,826.11/131.22
  6. Step 6: Final answer
    x = 173.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.