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Finding the Fourth Proportional to 461.53, 636.93 and 286.98

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Solution

The fourth proportional to 461.53, 636.93 and 286.98 is: 396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.53 : 636.93 = 286.98 : x
  2. Step 2: Convert to fraction form
    461.53/636.93 = 286.98/x
  3. Step 3: Cross multiply
    461.53x = 636.93 × 286.98
  4. Step 4: Simplify right side
    461.53x = 182,783.78
  5. Step 5: Solve for x
    x = 182,783.78/461.53
  6. Step 6: Final answer
    x = 396.04

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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.