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Finding the Fourth Proportional to 380.59, 569.90 and 326.09

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Solution

The fourth proportional to 380.59, 569.90 and 326.09 is: 488.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.59 : 569.90 = 326.09 : x
  2. Step 2: Convert to fraction form
    380.59/569.90 = 326.09/x
  3. Step 3: Cross multiply
    380.59x = 569.90 × 326.09
  4. Step 4: Simplify right side
    380.59x = 185,838.49
  5. Step 5: Solve for x
    x = 185,838.49/380.59
  6. Step 6: Final answer
    x = 488.29

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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.