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Finding the Fourth Proportional to 130.38, 194.44 and 114.21

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Solution

The fourth proportional to 130.38, 194.44 and 114.21 is: 170.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.38 : 194.44 = 114.21 : x
  2. Step 2: Convert to fraction form
    130.38/194.44 = 114.21/x
  3. Step 3: Cross multiply
    130.38x = 194.44 × 114.21
  4. Step 4: Simplify right side
    130.38x = 22,206.76
  5. Step 5: Solve for x
    x = 22,206.76/130.38
  6. Step 6: Final answer
    x = 170.32

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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.