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Finding the Fourth Proportional to 292.08, 403.08 and 161.09

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Solution

The fourth proportional to 292.08, 403.08 and 161.09 is: 222.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.08 : 403.08 = 161.09 : x
  2. Step 2: Convert to fraction form
    292.08/403.08 = 161.09/x
  3. Step 3: Cross multiply
    292.08x = 403.08 × 161.09
  4. Step 4: Simplify right side
    292.08x = 64,933.32
  5. Step 5: Solve for x
    x = 64,933.32/292.08
  6. Step 6: Final answer
    x = 222.31

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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.