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Finding the Fourth Proportional to 148.88, 223.21 and 79.41

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Solution

The fourth proportional to 148.88, 223.21 and 79.41 is: 119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.88 : 223.21 = 79.41 : x
  2. Step 2: Convert to fraction form
    148.88/223.21 = 79.41/x
  3. Step 3: Cross multiply
    148.88x = 223.21 × 79.41
  4. Step 4: Simplify right side
    148.88x = 17,724.34
  5. Step 5: Solve for x
    x = 17,724.34/148.88
  6. Step 6: Final answer
    x = 119.05

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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.