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Finding the Fourth Proportional to 184.72, 254.92 and 126.64

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Solution

The fourth proportional to 184.72, 254.92 and 126.64 is: 174.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.72 : 254.92 = 126.64 : x
  2. Step 2: Convert to fraction form
    184.72/254.92 = 126.64/x
  3. Step 3: Cross multiply
    184.72x = 254.92 × 126.64
  4. Step 4: Simplify right side
    184.72x = 32,283.07
  5. Step 5: Solve for x
    x = 32,283.07/184.72
  6. Step 6: Final answer
    x = 174.77

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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.