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Finding the Fourth Proportional to 141.46, 211.03 and 131.64

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Solution

The fourth proportional to 141.46, 211.03 and 131.64 is: 196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.46 : 211.03 = 131.64 : x
  2. Step 2: Convert to fraction form
    141.46/211.03 = 131.64/x
  3. Step 3: Cross multiply
    141.46x = 211.03 × 131.64
  4. Step 4: Simplify right side
    141.46x = 27,779.99
  5. Step 5: Solve for x
    x = 27,779.99/141.46
  6. Step 6: Final answer
    x = 196.38

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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.