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Finding the Fourth Proportional to 273.99, 410.19 and 143.69

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Solution

The fourth proportional to 273.99, 410.19 and 143.69 is: 215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.99 : 410.19 = 143.69 : x
  2. Step 2: Convert to fraction form
    273.99/410.19 = 143.69/x
  3. Step 3: Cross multiply
    273.99x = 410.19 × 143.69
  4. Step 4: Simplify right side
    273.99x = 58,938.42
  5. Step 5: Solve for x
    x = 58,938.42/273.99
  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.