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Finding the Fourth Proportional to 436.05, 650.88 and 381.38

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Solution

The fourth proportional to 436.05, 650.88 and 381.38 is: 569.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.05 : 650.88 = 381.38 : x
  2. Step 2: Convert to fraction form
    436.05/650.88 = 381.38/x
  3. Step 3: Cross multiply
    436.05x = 650.88 × 381.38
  4. Step 4: Simplify right side
    436.05x = 248,229.36
  5. Step 5: Solve for x
    x = 248,229.36/436.05
  6. Step 6: Final answer
    x = 569.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.