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Finding the Fourth Proportional to 875.25, 1,314.75 and 550.83

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Solution

The fourth proportional to 875.25, 1,314.75 and 550.83 is: 827.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.25 : 1,314.75 = 550.83 : x
  2. Step 2: Convert to fraction form
    875.25/1,314.75 = 550.83/x
  3. Step 3: Cross multiply
    875.25x = 1,314.75 × 550.83
  4. Step 4: Simplify right side
    875.25x = 724,203.74
  5. Step 5: Solve for x
    x = 724,203.74/875.25
  6. Step 6: Final answer
    x = 827.43

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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.