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Finding the Fourth Proportional to 1,536.88, 2,305.28 and 382.64

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Solution

The fourth proportional to 1,536.88, 2,305.28 and 382.64 is: 573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.88 : 2,305.28 = 382.64 : x
  2. Step 2: Convert to fraction form
    1,536.88/2,305.28 = 382.64/x
  3. Step 3: Cross multiply
    1,536.88x = 2,305.28 × 382.64
  4. Step 4: Simplify right side
    1,536.88x = 882,092.34
  5. Step 5: Solve for x
    x = 882,092.34/1,536.88
  6. Step 6: Final answer
    x = 573.95

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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.