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Finding the Fourth Proportional to 454.32, 681.52 and 271.84

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Solution

The fourth proportional to 454.32, 681.52 and 271.84 is: 407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.32 : 681.52 = 271.84 : x
  2. Step 2: Convert to fraction form
    454.32/681.52 = 271.84/x
  3. Step 3: Cross multiply
    454.32x = 681.52 × 271.84
  4. Step 4: Simplify right side
    454.32x = 185,264.40
  5. Step 5: Solve for x
    x = 185,264.40/454.32
  6. Step 6: Final answer
    x = 407.78

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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.