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Finding the Fourth Proportional to 380.69, 525.49 and 223.37

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Solution

The fourth proportional to 380.69, 525.49 and 223.37 is: 308.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.69 : 525.49 = 223.37 : x
  2. Step 2: Convert to fraction form
    380.69/525.49 = 223.37/x
  3. Step 3: Cross multiply
    380.69x = 525.49 × 223.37
  4. Step 4: Simplify right side
    380.69x = 117,378.70
  5. Step 5: Solve for x
    x = 117,378.70/380.69
  6. Step 6: Final answer
    x = 308.33

Related Problems

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Double scale
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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.