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Finding the Fourth Proportional to 131.91, 180.89 and 127.95

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Solution

The fourth proportional to 131.91, 180.89 and 127.95 is: 175.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.91 : 180.89 = 127.95 : x
  2. Step 2: Convert to fraction form
    131.91/180.89 = 127.95/x
  3. Step 3: Cross multiply
    131.91x = 180.89 × 127.95
  4. Step 4: Simplify right side
    131.91x = 23,144.24
  5. Step 5: Solve for x
    x = 23,144.24/131.91
  6. Step 6: Final answer
    x = 175.45

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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.