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Finding the Fourth Proportional to 141.27, 212.75 and 124.34

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Solution

The fourth proportional to 141.27, 212.75 and 124.34 is: 187.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.27 : 212.75 = 124.34 : x
  2. Step 2: Convert to fraction form
    141.27/212.75 = 124.34/x
  3. Step 3: Cross multiply
    141.27x = 212.75 × 124.34
  4. Step 4: Simplify right side
    141.27x = 26,453.18
  5. Step 5: Solve for x
    x = 26,453.18/141.27
  6. Step 6: Final answer
    x = 187.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.