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Finding the Fourth Proportional to 241.55, 362.18 and 79.20

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Solution

The fourth proportional to 241.55, 362.18 and 79.20 is: 118.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.55 : 362.18 = 79.20 : x
  2. Step 2: Convert to fraction form
    241.55/362.18 = 79.20/x
  3. Step 3: Cross multiply
    241.55x = 362.18 × 79.20
  4. Step 4: Simplify right side
    241.55x = 28,684.26
  5. Step 5: Solve for x
    x = 28,684.26/241.55
  6. Step 6: Final answer
    x = 118.75

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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.