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Finding the Fourth Proportional to 550.99, 826.49 and 140.13

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Solution

The fourth proportional to 550.99, 826.49 and 140.13 is: 210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.99 : 826.49 = 140.13 : x
  2. Step 2: Convert to fraction form
    550.99/826.49 = 140.13/x
  3. Step 3: Cross multiply
    550.99x = 826.49 × 140.13
  4. Step 4: Simplify right side
    550.99x = 115,816.04
  5. Step 5: Solve for x
    x = 115,816.04/550.99
  6. Step 6: Final answer
    x = 210.20

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Double scale
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Similar ratio
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1.5x scale

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.