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Finding the Fourth Proportional to 126.76, 190.15 and 35.47

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Solution

The fourth proportional to 126.76, 190.15 and 35.47 is: 53.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.76 : 190.15 = 35.47 : x
  2. Step 2: Convert to fraction form
    126.76/190.15 = 35.47/x
  3. Step 3: Cross multiply
    126.76x = 190.15 × 35.47
  4. Step 4: Simplify right side
    126.76x = 6,743.49
  5. Step 5: Solve for x
    x = 6,743.49/126.76
  6. Step 6: Final answer
    x = 53.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.