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Finding the Fourth Proportional to 49.50, 68.34 and 34.95

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Solution

The fourth proportional to 49.50, 68.34 and 34.95 is: 48.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.50 : 68.34 = 34.95 : x
  2. Step 2: Convert to fraction form
    49.50/68.34 = 34.95/x
  3. Step 3: Cross multiply
    49.50x = 68.34 × 34.95
  4. Step 4: Simplify right side
    49.50x = 2,388.48
  5. Step 5: Solve for x
    x = 2,388.48/49.50
  6. Step 6: Final answer
    x = 48.25

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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.