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Finding the Fourth Proportional to 131.05, 179.66 and 130.89

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Solution

The fourth proportional to 131.05, 179.66 and 130.89 is: 179.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.05 : 179.66 = 130.89 : x
  2. Step 2: Convert to fraction form
    131.05/179.66 = 130.89/x
  3. Step 3: Cross multiply
    131.05x = 179.66 × 130.89
  4. Step 4: Simplify right side
    131.05x = 23,515.70
  5. Step 5: Solve for x
    x = 23,515.70/131.05
  6. Step 6: Final answer
    x = 179.44

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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.