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Finding the Fourth Proportional to 379.35, 569.22 and 328.32

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Solution

The fourth proportional to 379.35, 569.22 and 328.32 is: 492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.35 : 569.22 = 328.32 : x
  2. Step 2: Convert to fraction form
    379.35/569.22 = 328.32/x
  3. Step 3: Cross multiply
    379.35x = 569.22 × 328.32
  4. Step 4: Simplify right side
    379.35x = 186,886.31
  5. Step 5: Solve for x
    x = 186,886.31/379.35
  6. Step 6: Final answer
    x = 492.65

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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.