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Finding the Fourth Proportional to 305.52, 419.30 and 273.72

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Solution

The fourth proportional to 305.52, 419.30 and 273.72 is: 375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.52 : 419.30 = 273.72 : x
  2. Step 2: Convert to fraction form
    305.52/419.30 = 273.72/x
  3. Step 3: Cross multiply
    305.52x = 419.30 × 273.72
  4. Step 4: Simplify right side
    305.52x = 114,770.80
  5. Step 5: Solve for x
    x = 114,770.80/305.52
  6. Step 6: Final answer
    x = 375.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.