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Finding the Fourth Proportional to 92.28, 126.53 and 92.19

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Solution

The fourth proportional to 92.28, 126.53 and 92.19 is: 126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.28 : 126.53 = 92.19 : x
  2. Step 2: Convert to fraction form
    92.28/126.53 = 92.19/x
  3. Step 3: Cross multiply
    92.28x = 126.53 × 92.19
  4. Step 4: Simplify right side
    92.28x = 11,664.34
  5. Step 5: Solve for x
    x = 11,664.34/92.28
  6. Step 6: Final answer
    x = 126.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.