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Finding the Fourth Proportional to 1,782.95, 2,674.22 and 484.31

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Solution

The fourth proportional to 1,782.95, 2,674.22 and 484.31 is: 726.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.95 : 2,674.22 = 484.31 : x
  2. Step 2: Convert to fraction form
    1,782.95/2,674.22 = 484.31/x
  3. Step 3: Cross multiply
    1,782.95x = 2,674.22 × 484.31
  4. Step 4: Simplify right side
    1,782.95x = 1,295,155.75
  5. Step 5: Solve for x
    x = 1,295,155.75/1,782.95
  6. Step 6: Final answer
    x = 726.41

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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.