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Finding the Fourth Proportional to 241.80, 362 and 154.90

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Solution

The fourth proportional to 241.80, 362 and 154.90 is: 231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.80 : 362 = 154.90 : x
  2. Step 2: Convert to fraction form
    241.80/362 = 154.90/x
  3. Step 3: Cross multiply
    241.80x = 362 × 154.90
  4. Step 4: Simplify right side
    241.80x = 56,073.80
  5. Step 5: Solve for x
    x = 56,073.80/241.80
  6. Step 6: Final answer
    x = 231.90

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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.