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Finding the Fourth Proportional to 443.30, 611.82 and 277.47

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Solution

The fourth proportional to 443.30, 611.82 and 277.47 is: 382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.30 : 611.82 = 277.47 : x
  2. Step 2: Convert to fraction form
    443.30/611.82 = 277.47/x
  3. Step 3: Cross multiply
    443.30x = 611.82 × 277.47
  4. Step 4: Simplify right side
    443.30x = 169,761.70
  5. Step 5: Solve for x
    x = 169,761.70/443.30
  6. Step 6: Final answer
    x = 382.95

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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.