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Finding the Fourth Proportional to 174.12, 240.21 and 124.98

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Solution

The fourth proportional to 174.12, 240.21 and 124.98 is: 172.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.12 : 240.21 = 124.98 : x
  2. Step 2: Convert to fraction form
    174.12/240.21 = 124.98/x
  3. Step 3: Cross multiply
    174.12x = 240.21 × 124.98
  4. Step 4: Simplify right side
    174.12x = 30,021.45
  5. Step 5: Solve for x
    x = 30,021.45/174.12
  6. Step 6: Final answer
    x = 172.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.