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Finding the Fourth Proportional to 998.63, 1,497.69 and 382.37

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Solution

The fourth proportional to 998.63, 1,497.69 and 382.37 is: 573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    998.63 : 1,497.69 = 382.37 : x
  2. Step 2: Convert to fraction form
    998.63/1,497.69 = 382.37/x
  3. Step 3: Cross multiply
    998.63x = 1,497.69 × 382.37
  4. Step 4: Simplify right side
    998.63x = 572,672.66
  5. Step 5: Solve for x
    x = 572,672.66/998.63
  6. Step 6: Final answer
    x = 573.46

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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.