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Finding the Fourth Proportional to 608.22, 908.40 and 550.32

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Solution

The fourth proportional to 608.22, 908.40 and 550.32 is: 821.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.22 : 908.40 = 550.32 : x
  2. Step 2: Convert to fraction form
    608.22/908.40 = 550.32/x
  3. Step 3: Cross multiply
    608.22x = 908.40 × 550.32
  4. Step 4: Simplify right side
    608.22x = 499,910.69
  5. Step 5: Solve for x
    x = 499,910.69/608.22
  6. Step 6: Final answer
    x = 821.92

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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.