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Finding the Fourth Proportional to 186.60, 261.60 and 186.60

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Solution

The fourth proportional to 186.60, 261.60 and 186.60 is: 261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.60 : 261.60 = 186.60 : x
  2. Step 2: Convert to fraction form
    186.60/261.60 = 186.60/x
  3. Step 3: Cross multiply
    186.60x = 261.60 × 186.60
  4. Step 4: Simplify right side
    186.60x = 48,814.56
  5. Step 5: Solve for x
    x = 48,814.56/186.60
  6. Step 6: Final answer
    x = 261.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.