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Finding the Fourth Proportional to 475.90, 656.55 and 344.62

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Solution

The fourth proportional to 475.90, 656.55 and 344.62 is: 475.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.90 : 656.55 = 344.62 : x
  2. Step 2: Convert to fraction form
    475.90/656.55 = 344.62/x
  3. Step 3: Cross multiply
    475.90x = 656.55 × 344.62
  4. Step 4: Simplify right side
    475.90x = 226,260.26
  5. Step 5: Solve for x
    x = 226,260.26/475.90
  6. Step 6: Final answer
    x = 475.44

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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.