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Finding the Fourth Proportional to 141.36, 211.04 and 126.15

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Solution

The fourth proportional to 141.36, 211.04 and 126.15 is: 188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.36 : 211.04 = 126.15 : x
  2. Step 2: Convert to fraction form
    141.36/211.04 = 126.15/x
  3. Step 3: Cross multiply
    141.36x = 211.04 × 126.15
  4. Step 4: Simplify right side
    141.36x = 26,622.07
  5. Step 5: Solve for x
    x = 26,622.07/141.36
  6. Step 6: Final answer
    x = 188.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.