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Finding the Fourth Proportional to 550.95, 826.38 and 140.07

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Solution

The fourth proportional to 550.95, 826.38 and 140.07 is: 210.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.95 : 826.38 = 140.07 : x
  2. Step 2: Convert to fraction form
    550.95/826.38 = 140.07/x
  3. Step 3: Cross multiply
    550.95x = 826.38 × 140.07
  4. Step 4: Simplify right side
    550.95x = 115,751.05
  5. Step 5: Solve for x
    x = 115,751.05/550.95
  6. Step 6: Final answer
    x = 210.09

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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.