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Finding the Fourth Proportional to 453.82, 679.70 and 277.66

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Solution

The fourth proportional to 453.82, 679.70 and 277.66 is: 415.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.82 : 679.70 = 277.66 : x
  2. Step 2: Convert to fraction form
    453.82/679.70 = 277.66/x
  3. Step 3: Cross multiply
    453.82x = 679.70 × 277.66
  4. Step 4: Simplify right side
    453.82x = 188,725.50
  5. Step 5: Solve for x
    x = 188,725.50/453.82
  6. Step 6: Final answer
    x = 415.86

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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.