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Finding the Fourth Proportional to 130.19, 195.34 and 65.25

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Solution

The fourth proportional to 130.19, 195.34 and 65.25 is: 97.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.19 : 195.34 = 65.25 : x
  2. Step 2: Convert to fraction form
    130.19/195.34 = 65.25/x
  3. Step 3: Cross multiply
    130.19x = 195.34 × 65.25
  4. Step 4: Simplify right side
    130.19x = 12,745.94
  5. Step 5: Solve for x
    x = 12,745.94/130.19
  6. Step 6: Final answer
    x = 97.90

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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.