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Finding the Fourth Proportional to 339.35, 468.03 and 221.32

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Solution

The fourth proportional to 339.35, 468.03 and 221.32 is: 305.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.35 : 468.03 = 221.32 : x
  2. Step 2: Convert to fraction form
    339.35/468.03 = 221.32/x
  3. Step 3: Cross multiply
    339.35x = 468.03 × 221.32
  4. Step 4: Simplify right side
    339.35x = 103,584.06
  5. Step 5: Solve for x
    x = 103,584.06/339.35
  6. Step 6: Final answer
    x = 305.24

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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.