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Finding the Fourth Proportional to 174.34, 241.55 and 154.90

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Solution

The fourth proportional to 174.34, 241.55 and 154.90 is: 214.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.34 : 241.55 = 154.90 : x
  2. Step 2: Convert to fraction form
    174.34/241.55 = 154.90/x
  3. Step 3: Cross multiply
    174.34x = 241.55 × 154.90
  4. Step 4: Simplify right side
    174.34x = 37,416.10
  5. Step 5: Solve for x
    x = 37,416.10/174.34
  6. Step 6: Final answer
    x = 214.62

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.