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Finding the Fourth Proportional to 174.98, 241.40 and 112.79

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Solution

The fourth proportional to 174.98, 241.40 and 112.79 is: 155.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.98 : 241.40 = 112.79 : x
  2. Step 2: Convert to fraction form
    174.98/241.40 = 112.79/x
  3. Step 3: Cross multiply
    174.98x = 241.40 × 112.79
  4. Step 4: Simplify right side
    174.98x = 27,225.74
  5. Step 5: Solve for x
    x = 27,225.74/174.98
  6. Step 6: Final answer
    x = 155.59

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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.