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Finding the Fourth Proportional to 384.09, 579.30 and 371.78

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Solution

The fourth proportional to 384.09, 579.30 and 371.78 is: 560.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.09 : 579.30 = 371.78 : x
  2. Step 2: Convert to fraction form
    384.09/579.30 = 371.78/x
  3. Step 3: Cross multiply
    384.09x = 579.30 × 371.78
  4. Step 4: Simplify right side
    384.09x = 215,369.26
  5. Step 5: Solve for x
    x = 215,369.26/384.09
  6. Step 6: Final answer
    x = 560.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.