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Finding the Fourth Proportional to 1,335.55, 2,003.28 and 604.62

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Solution

The fourth proportional to 1,335.55, 2,003.28 and 604.62 is: 906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.55 : 2,003.28 = 604.62 : x
  2. Step 2: Convert to fraction form
    1,335.55/2,003.28 = 604.62/x
  3. Step 3: Cross multiply
    1,335.55x = 2,003.28 × 604.62
  4. Step 4: Simplify right side
    1,335.55x = 1,211,213.14
  5. Step 5: Solve for x
    x = 1,211,213.14/1,335.55
  6. Step 6: Final answer
    x = 906.90

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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.