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Finding the Fourth Proportional to 50.76, 69.93 and 50.63

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Solution

The fourth proportional to 50.76, 69.93 and 50.63 is: 69.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.76 : 69.93 = 50.63 : x
  2. Step 2: Convert to fraction form
    50.76/69.93 = 50.63/x
  3. Step 3: Cross multiply
    50.76x = 69.93 × 50.63
  4. Step 4: Simplify right side
    50.76x = 3,540.21
  5. Step 5: Solve for x
    x = 3,540.21/50.76
  6. Step 6: Final answer
    x = 69.74

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Find fourth proportional to 25.38, 34.97 and 25.31
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.