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Finding the Fourth Proportional to 185.68, 257.30 and 181.43

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Solution

The fourth proportional to 185.68, 257.30 and 181.43 is: 251.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.68 : 257.30 = 181.43 : x
  2. Step 2: Convert to fraction form
    185.68/257.30 = 181.43/x
  3. Step 3: Cross multiply
    185.68x = 257.30 × 181.43
  4. Step 4: Simplify right side
    185.68x = 46,681.94
  5. Step 5: Solve for x
    x = 46,681.94/185.68
  6. Step 6: Final answer
    x = 251.41

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.