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Finding the Fourth Proportional to 286.81, 429.63 and 237.95

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Solution

The fourth proportional to 286.81, 429.63 and 237.95 is: 356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.81 : 429.63 = 237.95 : x
  2. Step 2: Convert to fraction form
    286.81/429.63 = 237.95/x
  3. Step 3: Cross multiply
    286.81x = 429.63 × 237.95
  4. Step 4: Simplify right side
    286.81x = 102,229.03
  5. Step 5: Solve for x
    x = 102,229.03/286.81
  6. Step 6: Final answer
    x = 356.43

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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.