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Finding the Fourth Proportional to 441.69, 609.53 and 245.20

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Solution

The fourth proportional to 441.69, 609.53 and 245.20 is: 338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.69 : 609.53 = 245.20 : x
  2. Step 2: Convert to fraction form
    441.69/609.53 = 245.20/x
  3. Step 3: Cross multiply
    441.69x = 609.53 × 245.20
  4. Step 4: Simplify right side
    441.69x = 149,456.76
  5. Step 5: Solve for x
    x = 149,456.76/441.69
  6. Step 6: Final answer
    x = 338.37

Related Problems

Find fourth proportional to 220.85, 304.77 and 122.60
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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.