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Finding the Fourth Proportional to 195.20, 269.15 and 145.99

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Solution

The fourth proportional to 195.20, 269.15 and 145.99 is: 201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.20 : 269.15 = 145.99 : x
  2. Step 2: Convert to fraction form
    195.20/269.15 = 145.99/x
  3. Step 3: Cross multiply
    195.20x = 269.15 × 145.99
  4. Step 4: Simplify right side
    195.20x = 39,291.81
  5. Step 5: Solve for x
    x = 39,291.81/195.20
  6. Step 6: Final answer
    x = 201.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.