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Finding the Fourth Proportional to 492.94, 680.10 and 475.90

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Solution

The fourth proportional to 492.94, 680.10 and 475.90 is: 656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.94 : 680.10 = 475.90 : x
  2. Step 2: Convert to fraction form
    492.94/680.10 = 475.90/x
  3. Step 3: Cross multiply
    492.94x = 680.10 × 475.90
  4. Step 4: Simplify right side
    492.94x = 323,659.59
  5. Step 5: Solve for x
    x = 323,659.59/492.94
  6. Step 6: Final answer
    x = 656.59

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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.