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Finding the Fourth Proportional to 140.41, 210.76 and 124.27

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Solution

The fourth proportional to 140.41, 210.76 and 124.27 is: 186.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.41 : 210.76 = 124.27 : x
  2. Step 2: Convert to fraction form
    140.41/210.76 = 124.27/x
  3. Step 3: Cross multiply
    140.41x = 210.76 × 124.27
  4. Step 4: Simplify right side
    140.41x = 26,190.31
  5. Step 5: Solve for x
    x = 26,190.31/140.41
  6. Step 6: Final answer
    x = 186.53

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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.