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Finding the Fourth Proportional to 512.98, 708.04 and 326.64

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Solution

The fourth proportional to 512.98, 708.04 and 326.64 is: 450.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.98 : 708.04 = 326.64 : x
  2. Step 2: Convert to fraction form
    512.98/708.04 = 326.64/x
  3. Step 3: Cross multiply
    512.98x = 708.04 × 326.64
  4. Step 4: Simplify right side
    512.98x = 231,274.19
  5. Step 5: Solve for x
    x = 231,274.19/512.98
  6. Step 6: Final answer
    x = 450.84

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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.