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Finding the Fourth Proportional to 114.96, 171.30 and 108.75

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Solution

The fourth proportional to 114.96, 171.30 and 108.75 is: 162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.96 : 171.30 = 108.75 : x
  2. Step 2: Convert to fraction form
    114.96/171.30 = 108.75/x
  3. Step 3: Cross multiply
    114.96x = 171.30 × 108.75
  4. Step 4: Simplify right side
    114.96x = 18,628.88
  5. Step 5: Solve for x
    x = 18,628.88/114.96
  6. Step 6: Final answer
    x = 162.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.