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Finding the Fourth Proportional to 68.35, 94.25 and 48.68

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Solution

The fourth proportional to 68.35, 94.25 and 48.68 is: 67.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.35 : 94.25 = 48.68 : x
  2. Step 2: Convert to fraction form
    68.35/94.25 = 48.68/x
  3. Step 3: Cross multiply
    68.35x = 94.25 × 48.68
  4. Step 4: Simplify right side
    68.35x = 4,587.82
  5. Step 5: Solve for x
    x = 4,587.82/68.35
  6. Step 6: Final answer
    x = 67.13

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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.