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Finding the Fourth Proportional to 114.19, 171.37 and 73.64

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Solution

The fourth proportional to 114.19, 171.37 and 73.64 is: 110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.19 : 171.37 = 73.64 : x
  2. Step 2: Convert to fraction form
    114.19/171.37 = 73.64/x
  3. Step 3: Cross multiply
    114.19x = 171.37 × 73.64
  4. Step 4: Simplify right side
    114.19x = 12,619.79
  5. Step 5: Solve for x
    x = 12,619.79/114.19
  6. Step 6: Final answer
    x = 110.51

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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.