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Finding the Fourth Proportional to 379.57, 569.01 and 171.19

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Solution

The fourth proportional to 379.57, 569.01 and 171.19 is: 256.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.57 : 569.01 = 171.19 : x
  2. Step 2: Convert to fraction form
    379.57/569.01 = 171.19/x
  3. Step 3: Cross multiply
    379.57x = 569.01 × 171.19
  4. Step 4: Simplify right side
    379.57x = 97,408.82
  5. Step 5: Solve for x
    x = 97,408.82/379.57
  6. Step 6: Final answer
    x = 256.63

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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.