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Finding the Fourth Proportional to 559.44, 839.22 and 230.31

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Solution

The fourth proportional to 559.44, 839.22 and 230.31 is: 345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.44 : 839.22 = 230.31 : x
  2. Step 2: Convert to fraction form
    559.44/839.22 = 230.31/x
  3. Step 3: Cross multiply
    559.44x = 839.22 × 230.31
  4. Step 4: Simplify right side
    559.44x = 193,280.76
  5. Step 5: Solve for x
    x = 193,280.76/559.44
  6. Step 6: Final answer
    x = 345.49

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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.