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Finding the Fourth Proportional to 854.92, 1,179.79 and 461.95

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Solution

The fourth proportional to 854.92, 1,179.79 and 461.95 is: 637.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.92 : 1,179.79 = 461.95 : x
  2. Step 2: Convert to fraction form
    854.92/1,179.79 = 461.95/x
  3. Step 3: Cross multiply
    854.92x = 1,179.79 × 461.95
  4. Step 4: Simplify right side
    854.92x = 545,000.14
  5. Step 5: Solve for x
    x = 545,000.14/854.92
  6. Step 6: Final answer
    x = 637.48

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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.