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Finding the Fourth Proportional to 663.26, 994.99 and 230.31

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Solution

The fourth proportional to 663.26, 994.99 and 230.31 is: 345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.26 : 994.99 = 230.31 : x
  2. Step 2: Convert to fraction form
    663.26/994.99 = 230.31/x
  3. Step 3: Cross multiply
    663.26x = 994.99 × 230.31
  4. Step 4: Simplify right side
    663.26x = 229,156.15
  5. Step 5: Solve for x
    x = 229,156.15/663.26
  6. Step 6: Final answer
    x = 345.50

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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.