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Finding the Fourth Proportional to 295.55, 408.35 and 222.11

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Solution

The fourth proportional to 295.55, 408.35 and 222.11 is: 306.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.55 : 408.35 = 222.11 : x
  2. Step 2: Convert to fraction form
    295.55/408.35 = 222.11/x
  3. Step 3: Cross multiply
    295.55x = 408.35 × 222.11
  4. Step 4: Simplify right side
    295.55x = 90,697.51
  5. Step 5: Solve for x
    x = 90,697.51/295.55
  6. Step 6: Final answer
    x = 306.88

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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.