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Finding the Fourth Proportional to 454.46, 681.34 and 194.25

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Solution

The fourth proportional to 454.46, 681.34 and 194.25 is: 291.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.46 : 681.34 = 194.25 : x
  2. Step 2: Convert to fraction form
    454.46/681.34 = 194.25/x
  3. Step 3: Cross multiply
    454.46x = 681.34 × 194.25
  4. Step 4: Simplify right side
    454.46x = 132,350.30
  5. Step 5: Solve for x
    x = 132,350.30/454.46
  6. Step 6: Final answer
    x = 291.23

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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.