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Finding the Fourth Proportional to 357.55, 535.66 and 195.43

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Solution

The fourth proportional to 357.55, 535.66 and 195.43 is: 292.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.55 : 535.66 = 195.43 : x
  2. Step 2: Convert to fraction form
    357.55/535.66 = 195.43/x
  3. Step 3: Cross multiply
    357.55x = 535.66 × 195.43
  4. Step 4: Simplify right side
    357.55x = 104,684.03
  5. Step 5: Solve for x
    x = 104,684.03/357.55
  6. Step 6: Final answer
    x = 292.78

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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.