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Finding the Fourth Proportional to 854.55, 1,179.32 and 481.55

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Solution

The fourth proportional to 854.55, 1,179.32 and 481.55 is: 664.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.55 : 1,179.32 = 481.55 : x
  2. Step 2: Convert to fraction form
    854.55/1,179.32 = 481.55/x
  3. Step 3: Cross multiply
    854.55x = 1,179.32 × 481.55
  4. Step 4: Simplify right side
    854.55x = 567,893.24
  5. Step 5: Solve for x
    x = 567,893.24/854.55
  6. Step 6: Final answer
    x = 664.55

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1.5x scale

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.