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Finding the Fourth Proportional to 334.19, 461.60 and 287.62

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Solution

The fourth proportional to 334.19, 461.60 and 287.62 is: 397.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.19 : 461.60 = 287.62 : x
  2. Step 2: Convert to fraction form
    334.19/461.60 = 287.62/x
  3. Step 3: Cross multiply
    334.19x = 461.60 × 287.62
  4. Step 4: Simplify right side
    334.19x = 132,763.88
  5. Step 5: Solve for x
    x = 132,763.88/334.19
  6. Step 6: Final answer
    x = 397.27

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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.