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Finding the Fourth Proportional to 188.86, 260.48 and 133.62

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Solution

The fourth proportional to 188.86, 260.48 and 133.62 is: 184.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.86 : 260.48 = 133.62 : x
  2. Step 2: Convert to fraction form
    188.86/260.48 = 133.62/x
  3. Step 3: Cross multiply
    188.86x = 260.48 × 133.62
  4. Step 4: Simplify right side
    188.86x = 34,805.34
  5. Step 5: Solve for x
    x = 34,805.34/188.86
  6. Step 6: Final answer
    x = 184.29

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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.