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Finding the Fourth Proportional to 379.10, 521.60 and 368.17

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Solution

The fourth proportional to 379.10, 521.60 and 368.17 is: 506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.10 : 521.60 = 368.17 : x
  2. Step 2: Convert to fraction form
    379.10/521.60 = 368.17/x
  3. Step 3: Cross multiply
    379.10x = 521.60 × 368.17
  4. Step 4: Simplify right side
    379.10x = 192,034.33
  5. Step 5: Solve for x
    x = 192,034.33/379.10
  6. Step 6: Final answer
    x = 506.55

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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.