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Finding the Fourth Proportional to 186.66, 278.51 and 185.22

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Solution

The fourth proportional to 186.66, 278.51 and 185.22 is: 276.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.66 : 278.51 = 185.22 : x
  2. Step 2: Convert to fraction form
    186.66/278.51 = 185.22/x
  3. Step 3: Cross multiply
    186.66x = 278.51 × 185.22
  4. Step 4: Simplify right side
    186.66x = 51,584.70
  5. Step 5: Solve for x
    x = 51,584.70/186.66
  6. Step 6: Final answer
    x = 276.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.