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Finding the Fourth Proportional to 141.09, 211.43 and 102.48

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Solution

The fourth proportional to 141.09, 211.43 and 102.48 is: 153.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.09 : 211.43 = 102.48 : x
  2. Step 2: Convert to fraction form
    141.09/211.43 = 102.48/x
  3. Step 3: Cross multiply
    141.09x = 211.43 × 102.48
  4. Step 4: Simplify right side
    141.09x = 21,666.83
  5. Step 5: Solve for x
    x = 21,666.83/141.09
  6. Step 6: Final answer
    x = 153.57

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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.