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Finding the Fourth Proportional to 339.74, 468.84 and 229.18

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Solution

The fourth proportional to 339.74, 468.84 and 229.18 is: 316.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.74 : 468.84 = 229.18 : x
  2. Step 2: Convert to fraction form
    339.74/468.84 = 229.18/x
  3. Step 3: Cross multiply
    339.74x = 468.84 × 229.18
  4. Step 4: Simplify right side
    339.74x = 107,448.75
  5. Step 5: Solve for x
    x = 107,448.75/339.74
  6. Step 6: Final answer
    x = 316.27

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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.