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Finding the Fourth Proportional to 1,604.94, 2,407.68 and 738.78

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Solution

The fourth proportional to 1,604.94, 2,407.68 and 738.78 is: 1,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,604.94 : 2,407.68 = 738.78 : x
  2. Step 2: Convert to fraction form
    1,604.94/2,407.68 = 738.78/x
  3. Step 3: Cross multiply
    1,604.94x = 2,407.68 × 738.78
  4. Step 4: Simplify right side
    1,604.94x = 1,778,745.83
  5. Step 5: Solve for x
    x = 1,778,745.83/1,604.94
  6. Step 6: Final answer
    x = 1,108.29

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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.