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Finding the Fourth Proportional to 188.49, 280.54 and 186.39

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Solution

The fourth proportional to 188.49, 280.54 and 186.39 is: 277.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.49 : 280.54 = 186.39 : x
  2. Step 2: Convert to fraction form
    188.49/280.54 = 186.39/x
  3. Step 3: Cross multiply
    188.49x = 280.54 × 186.39
  4. Step 4: Simplify right side
    188.49x = 52,289.38
  5. Step 5: Solve for x
    x = 52,289.38/188.49
  6. Step 6: Final answer
    x = 277.41

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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.