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Finding the Fourth Proportional to 114.68, 171.19 and 98.25

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Solution

The fourth proportional to 114.68, 171.19 and 98.25 is: 146.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.68 : 171.19 = 98.25 : x
  2. Step 2: Convert to fraction form
    114.68/171.19 = 98.25/x
  3. Step 3: Cross multiply
    114.68x = 171.19 × 98.25
  4. Step 4: Simplify right side
    114.68x = 16,819.45
  5. Step 5: Solve for x
    x = 16,819.45/114.68
  6. Step 6: Final answer
    x = 146.67

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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.