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Finding the Fourth Proportional to 195.08, 291.90 and 143.76

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Solution

The fourth proportional to 195.08, 291.90 and 143.76 is: 215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.08 : 291.90 = 143.76 : x
  2. Step 2: Convert to fraction form
    195.08/291.90 = 143.76/x
  3. Step 3: Cross multiply
    195.08x = 291.90 × 143.76
  4. Step 4: Simplify right side
    195.08x = 41,963.54
  5. Step 5: Solve for x
    x = 41,963.54/195.08
  6. Step 6: Final answer
    x = 215.11

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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.