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Finding the Fourth Proportional to 141.69, 212.49 and 60.54

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Solution

The fourth proportional to 141.69, 212.49 and 60.54 is: 90.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.69 : 212.49 = 60.54 : x
  2. Step 2: Convert to fraction form
    141.69/212.49 = 60.54/x
  3. Step 3: Cross multiply
    141.69x = 212.49 × 60.54
  4. Step 4: Simplify right side
    141.69x = 12,864.14
  5. Step 5: Solve for x
    x = 12,864.14/141.69
  6. Step 6: Final answer
    x = 90.79

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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.