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Finding the Fourth Proportional to 252.22, 378.57 and 124.06

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Solution

The fourth proportional to 252.22, 378.57 and 124.06 is: 186.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.22 : 378.57 = 124.06 : x
  2. Step 2: Convert to fraction form
    252.22/378.57 = 124.06/x
  3. Step 3: Cross multiply
    252.22x = 378.57 × 124.06
  4. Step 4: Simplify right side
    252.22x = 46,965.39
  5. Step 5: Solve for x
    x = 46,965.39/252.22
  6. Step 6: Final answer
    x = 186.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.