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Finding the Fourth Proportional to 380.09, 569.68 and 136.33

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Solution

The fourth proportional to 380.09, 569.68 and 136.33 is: 204.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.09 : 569.68 = 136.33 : x
  2. Step 2: Convert to fraction form
    380.09/569.68 = 136.33/x
  3. Step 3: Cross multiply
    380.09x = 569.68 × 136.33
  4. Step 4: Simplify right side
    380.09x = 77,666.68
  5. Step 5: Solve for x
    x = 77,666.68/380.09
  6. Step 6: Final answer
    x = 204.34

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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.