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Finding the Fourth Proportional to 126.98, 187.88 and 126.62

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Solution

The fourth proportional to 126.98, 187.88 and 126.62 is: 187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.98 : 187.88 = 126.62 : x
  2. Step 2: Convert to fraction form
    126.98/187.88 = 126.62/x
  3. Step 3: Cross multiply
    126.98x = 187.88 × 126.62
  4. Step 4: Simplify right side
    126.98x = 23,789.37
  5. Step 5: Solve for x
    x = 23,789.37/126.98
  6. Step 6: Final answer
    x = 187.35

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.