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Finding the Fourth Proportional to 114.64, 171.97 and 68.97

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Solution

The fourth proportional to 114.64, 171.97 and 68.97 is: 103.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.64 : 171.97 = 68.97 : x
  2. Step 2: Convert to fraction form
    114.64/171.97 = 68.97/x
  3. Step 3: Cross multiply
    114.64x = 171.97 × 68.97
  4. Step 4: Simplify right side
    114.64x = 11,860.77
  5. Step 5: Solve for x
    x = 11,860.77/114.64
  6. Step 6: Final answer
    x = 103.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.