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Finding the Fourth Proportional to 68.17, 94.04 and 45.75

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Solution

The fourth proportional to 68.17, 94.04 and 45.75 is: 63.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.17 : 94.04 = 45.75 : x
  2. Step 2: Convert to fraction form
    68.17/94.04 = 45.75/x
  3. Step 3: Cross multiply
    68.17x = 94.04 × 45.75
  4. Step 4: Simplify right side
    68.17x = 4,302.33
  5. Step 5: Solve for x
    x = 4,302.33/68.17
  6. Step 6: Final answer
    x = 63.11

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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.