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Finding the Fourth Proportional to 130.73, 195.08 and 130.05

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Solution

The fourth proportional to 130.73, 195.08 and 130.05 is: 194.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.73 : 195.08 = 130.05 : x
  2. Step 2: Convert to fraction form
    130.73/195.08 = 130.05/x
  3. Step 3: Cross multiply
    130.73x = 195.08 × 130.05
  4. Step 4: Simplify right side
    130.73x = 25,369.50
  5. Step 5: Solve for x
    x = 25,369.50/130.73
  6. Step 6: Final answer
    x = 194.07

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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.