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Finding the Fourth Proportional to 68.16, 94.71 and 67.26

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Solution

The fourth proportional to 68.16, 94.71 and 67.26 is: 93.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.16 : 94.71 = 67.26 : x
  2. Step 2: Convert to fraction form
    68.16/94.71 = 67.26/x
  3. Step 3: Cross multiply
    68.16x = 94.71 × 67.26
  4. Step 4: Simplify right side
    68.16x = 6,370.19
  5. Step 5: Solve for x
    x = 6,370.19/68.16
  6. Step 6: Final answer
    x = 93.46

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.