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Finding the Fourth Proportional to 395.10, 592.75 and 121.18

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Solution

The fourth proportional to 395.10, 592.75 and 121.18 is: 181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.10 : 592.75 = 121.18 : x
  2. Step 2: Convert to fraction form
    395.10/592.75 = 121.18/x
  3. Step 3: Cross multiply
    395.10x = 592.75 × 121.18
  4. Step 4: Simplify right side
    395.10x = 71,825.88
  5. Step 5: Solve for x
    x = 71,825.88/395.10
  6. Step 6: Final answer
    x = 181.79

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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.