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Finding the Fourth Proportional to 379.69, 524.27 and 269.12

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Solution

The fourth proportional to 379.69, 524.27 and 269.12 is: 371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.69 : 524.27 = 269.12 : x
  2. Step 2: Convert to fraction form
    379.69/524.27 = 269.12/x
  3. Step 3: Cross multiply
    379.69x = 524.27 × 269.12
  4. Step 4: Simplify right side
    379.69x = 141,093.53
  5. Step 5: Solve for x
    x = 141,093.53/379.69
  6. Step 6: Final answer
    x = 371.60

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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.