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Finding the Fourth Proportional to 574.88, 862.16 and 343.58

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Solution

The fourth proportional to 574.88, 862.16 and 343.58 is: 515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.88 : 862.16 = 343.58 : x
  2. Step 2: Convert to fraction form
    574.88/862.16 = 343.58/x
  3. Step 3: Cross multiply
    574.88x = 862.16 × 343.58
  4. Step 4: Simplify right side
    574.88x = 296,221.37
  5. Step 5: Solve for x
    x = 296,221.37/574.88
  6. Step 6: Final answer
    x = 515.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.