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Finding the Fourth Proportional to 342.95, 473.13 and 195.55

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Solution

The fourth proportional to 342.95, 473.13 and 195.55 is: 269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.95 : 473.13 = 195.55 : x
  2. Step 2: Convert to fraction form
    342.95/473.13 = 195.55/x
  3. Step 3: Cross multiply
    342.95x = 473.13 × 195.55
  4. Step 4: Simplify right side
    342.95x = 92,520.57
  5. Step 5: Solve for x
    x = 92,520.57/342.95
  6. Step 6: Final answer
    x = 269.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.