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Finding the Fourth Proportional to 605.98, 908.29 and 259.21

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Solution

The fourth proportional to 605.98, 908.29 and 259.21 is: 388.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.98 : 908.29 = 259.21 : x
  2. Step 2: Convert to fraction form
    605.98/908.29 = 259.21/x
  3. Step 3: Cross multiply
    605.98x = 908.29 × 259.21
  4. Step 4: Simplify right side
    605.98x = 235,437.85
  5. Step 5: Solve for x
    x = 235,437.85/605.98
  6. Step 6: Final answer
    x = 388.52

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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.