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Finding the Fourth Proportional to 344.60, 475.55 and 189.35

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Solution

The fourth proportional to 344.60, 475.55 and 189.35 is: 261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.60 : 475.55 = 189.35 : x
  2. Step 2: Convert to fraction form
    344.60/475.55 = 189.35/x
  3. Step 3: Cross multiply
    344.60x = 475.55 × 189.35
  4. Step 4: Simplify right side
    344.60x = 90,045.39
  5. Step 5: Solve for x
    x = 90,045.39/344.60
  6. Step 6: Final answer
    x = 261.30

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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.