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Finding the Fourth Proportional to 103.27, 141.55 and 101.86

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Solution

The fourth proportional to 103.27, 141.55 and 101.86 is: 139.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.27 : 141.55 = 101.86 : x
  2. Step 2: Convert to fraction form
    103.27/141.55 = 101.86/x
  3. Step 3: Cross multiply
    103.27x = 141.55 × 101.86
  4. Step 4: Simplify right side
    103.27x = 14,418.28
  5. Step 5: Solve for x
    x = 14,418.28/103.27
  6. Step 6: Final answer
    x = 139.62

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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.