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Finding the Fourth Proportional to 186.93, 257.96 and 104.04

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Solution

The fourth proportional to 186.93, 257.96 and 104.04 is: 143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.93 : 257.96 = 104.04 : x
  2. Step 2: Convert to fraction form
    186.93/257.96 = 104.04/x
  3. Step 3: Cross multiply
    186.93x = 257.96 × 104.04
  4. Step 4: Simplify right side
    186.93x = 26,836.87
  5. Step 5: Solve for x
    x = 26,836.87/186.93
  6. Step 6: Final answer
    x = 143.57

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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.