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Finding the Fourth Proportional to 382.90, 573.94 and 187.63

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Solution

The fourth proportional to 382.90, 573.94 and 187.63 is: 281.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.90 : 573.94 = 187.63 : x
  2. Step 2: Convert to fraction form
    382.90/573.94 = 187.63/x
  3. Step 3: Cross multiply
    382.90x = 573.94 × 187.63
  4. Step 4: Simplify right side
    382.90x = 107,686.93
  5. Step 5: Solve for x
    x = 107,686.93/382.90
  6. Step 6: Final answer
    x = 281.24

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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.