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Finding the Fourth Proportional to 608.80, 906.32 and 605.20

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Solution

The fourth proportional to 608.80, 906.32 and 605.20 is: 900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.80 : 906.32 = 605.20 : x
  2. Step 2: Convert to fraction form
    608.80/906.32 = 605.20/x
  3. Step 3: Cross multiply
    608.80x = 906.32 × 605.20
  4. Step 4: Simplify right side
    608.80x = 548,504.86
  5. Step 5: Solve for x
    x = 548,504.86/608.80
  6. Step 6: Final answer
    x = 900.96

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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.