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Finding the Fourth Proportional to 188.53, 260.28 and 133.38

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Solution

The fourth proportional to 188.53, 260.28 and 133.38 is: 184.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.53 : 260.28 = 133.38 : x
  2. Step 2: Convert to fraction form
    188.53/260.28 = 133.38/x
  3. Step 3: Cross multiply
    188.53x = 260.28 × 133.38
  4. Step 4: Simplify right side
    188.53x = 34,716.15
  5. Step 5: Solve for x
    x = 34,716.15/188.53
  6. Step 6: Final answer
    x = 184.14

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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.