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Finding the Fourth Proportional to 149.94, 223.68 and 141.84

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Solution

The fourth proportional to 149.94, 223.68 and 141.84 is: 211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.94 : 223.68 = 141.84 : x
  2. Step 2: Convert to fraction form
    149.94/223.68 = 141.84/x
  3. Step 3: Cross multiply
    149.94x = 223.68 × 141.84
  4. Step 4: Simplify right side
    149.94x = 31,724.94
  5. Step 5: Solve for x
    x = 31,724.94/149.94
  6. Step 6: Final answer
    x = 211.59

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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.