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Finding the Fourth Proportional to 1,646.88, 2,470.56 and 550.98

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Solution

The fourth proportional to 1,646.88, 2,470.56 and 550.98 is: 826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.88 : 2,470.56 = 550.98 : x
  2. Step 2: Convert to fraction form
    1,646.88/2,470.56 = 550.98/x
  3. Step 3: Cross multiply
    1,646.88x = 2,470.56 × 550.98
  4. Step 4: Simplify right side
    1,646.88x = 1,361,229.15
  5. Step 5: Solve for x
    x = 1,361,229.15/1,646.88
  6. Step 6: Final answer
    x = 826.55

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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.