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Finding the Fourth Proportional to 608.75, 908.52 and 550.43

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Solution

The fourth proportional to 608.75, 908.52 and 550.43 is: 821.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.75 : 908.52 = 550.43 : x
  2. Step 2: Convert to fraction form
    608.75/908.52 = 550.43/x
  3. Step 3: Cross multiply
    608.75x = 908.52 × 550.43
  4. Step 4: Simplify right side
    608.75x = 500,076.66
  5. Step 5: Solve for x
    x = 500,076.66/608.75
  6. Step 6: Final answer
    x = 821.48

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.